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The Next Full Moon is the Cold, Frost or Winter Moon


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The Next Full Moon is the Cold, Frost or Winter Moon

The Moon rises above a jumbled collection of giant rocks.
A full moon rises about California’s Vasquez Rocks
Credits:
NASA/Preston Dyches

January 2024

The Next Full Moon is the Cold, Frost, or Winter Moon; the Long Night Moon; the Moon after Yule; the Datta Jayanti and Thiruvathira Festival Moon; Unduvap Poya; and the Chang’e Moon.

The next full Moon will be Tuesday evening, December 26, 2023, appearing opposite the Sun (in Earth-based longitude) at 7:33 PM EST. This will be on Wednesday in Coordinated Universal Time (UTC) and for most of Eurasia, Africa, and Australia. Many commercial calendars use UTC and will show this full Moon on Wednesday. The Moon will appear full for 3 days, from Monday evening to Thursday morning.

The Maine Farmers’ Almanac began publishing “Indian” names for full Moons in the 1930s. Over time these names have become widely known and used. According to this almanac, as the full Moon in December this is the Cold Moon, due to the long, cold nights. Other names are the Frost Moon, for the frosts as winter nears or the Winter Moon.

As the full Moon closest to the winter solstice, this is the Long Night Moon. The plane of the Moon’s orbit around the Earth nearly matches the plane of the Earth’s orbit around the Sun. When the path of the Sun appears lowest in the sky for the year, the path of the full Moon opposite the Sun appears near its highest. For the Washington, DC, area, on Tuesday evening into Wednesday morning, December 7 to 8, 2023, the Moon will be in the sky for a total of 15 hours 57 minutes, with 14 hours 33 minutes of this when the Sun is down, making this the longest full Moon night of the year. The Moon will reach a maximum altitude of 79.0 degrees at 24 minutes after midnight.

As the full Moon after the winter solstice, some consider this the Moon after Yule. Yule was a 3- to 12-day festival near the winter solstice in pre-Christian Europe. In the tenth century King Haakon I associated Yule with Christmas as part of the Christianization of Norway, and this association spread throughout Europe. However, when Yule was celebrated is unclear. Some sources associate it with the 12 days of Christmas, which puts the Moon after Yule in January. Other sources suggest that Yule is an old name for the month of January, so the Moon after Yule is in February. In the absence of better information, I’m going with the full Moon after the winter solstice as the Moon after Yule.

This full Moon corresponds with Datta Jayanti, also known as Dattatreya Jayanti, a Hindu festival commemorating the birth day of the Hindu god Dattatreya (Datta). This full Moon corresponds with the Thiruvathira festival celebrated by Hindus in the Indian states of Kerala and Tamil Nadu.

For the Buddhists of Sri Lanka, this is Unduvap Poya. In the third century BCE, Sanghamitta Theri, the daughter of Emperor Asoka of India and founder of an order of Buddhist nuns in Sri Lanka, brought a branch of the Bodhi Tree to Sri Lanka. This sapling was planted in 288 BCE by King Devanampiya Tissa in the Mahamevnāwa Park in Anuradhapura, Sri Lanka, where it still grows today, making it the oldest living human-planted tree with a known planting date.

We could also call this the Chang’e Moon, after the three Chinese lunar landers that launched and landed on the Moon this time of year. These missions get their name from the Chinese goddess of the Moon, Chang’e, who lived on the Moon with her pet rabbit, Yutu. The Chang’e 3 lander and its companion Yutu-1 rover launched on December 1 and landed on the Moon on December 14, 2013. The Chang’e 4 lander and Yutu-2 rover launched December 7, 2018, and landed on the Moon on January 3, 2019. The Chang’e 5 lunar sample return mission launched on November 23 (in UTC, November 24 in China’s time zone), collected samples from the Moon, and returned them to Earth on December 16, 2020, humanity’s first lunar sample return since 1976.

In many lunar and lunisolar calendars the months change with the new Moon and full Moons fall in the middle of the lunar month. This full Moon is in the middle of the eleventh month of the Chinese calendar, Tevet in the Hebrew calendar, and Jumada al-Thani in the Islamic calendar, also known as Jumada al-Akhirah or Jumada al-Akhir.

As usual, the wearing of suitably celebratory celestial attire is encouraged in honor of the full Moon. Make sure you are ready for winter and take advantage of these early sunsets to enjoy and share the wonders of the night sky.

As for other celestial events between now and the full Moon after next (with times and angles based on the location of NASA Headquarters in Washington, DC):

As winter continues, the daily periods of sunlight continue lengthening. On Tuesday, December 26, 2023 (the day of the full Moon), morning twilight will begin at 6:22 AM, sunrise will be at 7:25 AM, solar noon will be at 12:09 PM when the Sun will reach its maximum altitude of 27.8 degrees, sunset will be at 4:52 PM, and evening twilight will end at 5:56 PM. Our 24-hour clock is based on the average length of the solar day. Although the day of the winter solstice is sometimes called the “shortest day of the year” (because it has the shortest period of sunlight), the solar days near the solstice are actually the longest solar days of the year. Because of this, the earliest sunset of the year occurs before the solstice and the latest sunrise of the year (ignoring Daylight Savings Time) occurs after the solstice. For the Washington, DC area and similar latitudes (I’ve not checked other latitudes), Friday, January 5, 2024, will have the latest (non-daylight-savings time) sunrise of the year (with sunrise at 7:26:56 AM EST). By Thursday, January 25 (the day of the full Moon after next), morning twilight will begin at 6:24 AM, sunrise will be at 7:27 AM, solar noon will be at 12:13 PM when the Sun will reach its maximum altitude of 28.5 degrees, sunset will be at 5:00 PM, and evening twilight will end at 6:03 PM.

Meteor Showers

The Quadrantids (010 QUA) meteor shower is predicted to be active from December 28, 2023 to January 12, 2024, peaking early Thursday morning, January 4. This shower can have visible meteor rates as high as the other two reliably rich meteor showers (the Perseids in August and the Geminids in December), but is harder to see because the peak is narrower (only a few hours) and these meteors are fainter. The best time to look may be the morning of January 4 for the hour or two before the Moon rises (at 2:29 AM EST), as moonlight will interfere at the time of the predicted peak at 4 AM EST. The International Meteor Organization (IMO) reports that video and radio forward scatter data from the last few years suggest the peak may be a few hours ahead of the predicted peak and that the maximum may be wider than the usually quoted 4 hours, making the time before moonrise more promising.

The area of the sky that these meteors will appear to radiate out from (called the radiant) will rise above the north-northeastern horizon Wednesday night at around 10 PM EST. The higher the radiant is above the horizon the fewer meteors will be hidden, so it’s generally best to look after midnight but before moonrise. To see these meteors you will need a dark place far from the glow of city lights with a clear view of a large part of the sky, and for the weather to cooperate by providing a clear sky without clouds or haze. This is particularly important because these meteors tend to be faint.

Be sure to give your eyes plenty of time to adapt to the dark. The rod cells in your eyes are more sensitive to low light levels but play little role in color vision. Your color-sensing cone cells are concentrated near the center of your view with more rod cells on the edge of your view. Since some meteors are faint, you will tend to see more meteors from the “corner of your eye” (which is why you need to view a large part of the sky). Your color vision (cone cells) will adapt to darkness in about 10 minutes, but your more sensitive night vision rod cells will continue to improve for an hour or more (with most of the improvement in the first 35 to 45 minutes). The more sensitive your eyes are, the more chance you have of seeing meteors. Even a short exposure to light (from passing car headlights, etc.) will start the adaptation over again (so no turning on a light or your cell phone to check what time it is).

These meteors are caused by a stream of debris that enters the Earth’s atmosphere at 41 kilometers per second (92,000 miles per hour). The source of this debris might be the asteroid (196256) 2003 EH1, which may be an extinct comet and may be related to a comet discovered by Chinese, Japanese, and Korean astronomers in 1490 (called C/1490 Y1).

Evening Sky Highlights

Despite the cold weather, these still should be great evenings for Jupiter and Saturn watching, especially with a backyard telescope. Both will appear to shift westward each night. Jupiter was at its closest and brightest on November 2, 2023, and will be high in the sky as evening twilight ends. Saturn was at its closest and brightest for the year on August 27, and will be lower in the sky, gradually shifting towards the west-southwestern horizon. With clear skies and a telescope you should be able to see Jupiter’s four bright moons, Ganymede, Callisto, Europa, and Io, noticeably shifting positions in the course of an evening. For Saturn, you should be able to see Saturn’s rings as well as Saturn’s largest moon, Titan.

On the evening of Tuesday, December 26 (the evening of the night of the full Moon), as evening twilight ends (at 5:56 PM EST), the rising Moon will be 15 degrees above the east-northeastern horizon. Two planets will be visible. The brightest will be Jupiter at 51 degrees above the southeastern horizon. Saturn will be 33 degrees above the south-southwestern horizon. The bright object appearing closest to overhead will be the star Deneb at 52 degrees above the west-northwestern horizon, with Jupiter a close second. Deneb is the brightest star in the constellation Cygnus the swan and is one of the three bright stars of the “Summer Triangle” (along with Vega and Altair). Deneb is about 20 times more massive than our Sun and has used up its hydrogen, becoming a blue-white supergiant about 200 times the diameter of the Sun. If Deneb were where our Sun is, it would extend to about the orbit of the Earth. Deneb is about 2,600 light years from us and is the 19th brightest star in our night sky.

As this lunar cycle progresses, Jupiter, Saturn, and the background of stars will appear to shift westward each evening (as the Earth moves around the Sun). The still full Moon will appear near the bright star Pollux on December 27 and the waxing Moon will pass by Saturn on January 14, 2024, Jupiter on January 18, the Pleiades star cluster on January 20, and Pollux on January 24.

By the evening of Thursday, January 25 (the evening of the day of the full Moon after next), as evening twilight ends (at 6:22 PM EST), the rising Moon will be 11 degrees above the east-northeastern horizon. Two planets will be visible. The brightest will be Jupiter at 64 degrees above the southern horizon, making Jupiter the bright object closest to overhead. Saturn will be 15 degrees above the west-southwestern horizon.

Morning Sky Highlights

On the morning of Wednesday, December 27, 2023 (the morning of the night of the full Moon), as morning twilight begins (at 6:22 AM EST), the setting full Moon will be 18 degrees above the west-northwestern horizon. The only visible planet will be bright Venus at 19 degrees above the southeastern horizon. The bright object appearing closest to overhead will be the star Arcturus at 61 degrees above the southeastern horizon. Arcturus is the brightest star in the constellation Boötes the herdsman or plowman, is the 4th brightest star in our night sky, and is 36.7 light years from us. While it has about the same mass as our Sun, it is about 2.6 billion years older and has used up its core hydrogen, becoming a red giant 25 times the size and 170 times the brightness of our Sun.

As this lunar cycle progresses, the background of stars will appear to shift westward each evening, while Venus will gradually shift the other direction towards the southeastern horizon. After December 28 the planet Mercury will join Venus in the morning sky, rising on the east-southeastern horizon before morning twilight begins. Mercury will reach its highest as morning twilight begins on January 8, 2024, after which it will shift towards the horizon again. After January 20 the planet Mars will join Venus and Mercury, rising on the east-southeastern horizon before morning twilight begins. The waning Moon will pass near Pollux on December 28, Regulus on December 31, Spica on January 4 and 5, Antares and bright Venus on January 8 (with Mercury farther to the left), and Mercury on January 9. One of the three major meteor showers of the year, the Quadrantids, is predicted to peak early January 4. The best time to look may be the hour or two before the Moon rises (at 2:29 AM EST), as moonlight will interfere by the time of the predicted peak at 4 AM.

By the morning of Thursday, January 25 (the morning of the day of the full Moon after next), as morning twilight begins (at 6:19 AM EST), the setting full Moon will be 13 degrees above the west-northwestern horizon. Three planets will be visible in the sky (although two will be very low on the horizon). The brightest will be Venus at 10 degrees above the southeastern horizon. Next in brightness will be Mercury at 1.5 degrees above the east-southeastern horizon. To the lower left of Mercury will be Mars, just barely above the horizon. Mercury and Mars will appear at their closest to each other two mornings later. The bright object appearing closest to overhead will still be the star Arcturus at 70 degrees above the southern horizon.

Detailed Daily Guide

Here for your reference is a day-by-day listing of celestial events between now and the full Moon after next. The times and angles are based on the location of NASA Headquarters in Washington, DC, and some of these details may differ for where you are (I use parentheses to indicate times specific to the DC area).

Thursday evening, December 21, 2023, at 10:27 PM EST, will be the winter solstice. This will be the day with the shortest period of daylight (9 hours, 26 minutes, 13 seconds long). Worldwide there are many festivals associated with the winter solstice, including Yule and the Chinese Dongzhi Festival.

Europeans have used two main ways to divide the year into seasons and define winter. The old Celtic calendar used in much of pre-Christian Europe considered winter to be the quarter of the year with the shortest periods of daylight and the longest periods of night, so that winter started around Halloween and ended around Groundhog Day (hence the origin of these traditions). However, since it takes time for our planet to cool off, the quarter year with the coldest average temperatures starts later than the quarter year with the shortest days. In our modern calendar we approximate this by having winter start on the winter solstice and end on the spring equinox. For the Washington, DC area at least, the quarter year with the coldest average temperatures actually starts the first week of December and ends the first week of March.

Solar noon on Thursday, December 21, to solar noon on Friday, December 22, 2023, will be the longest solar day of the year, 24 hours 29.8 seconds long. In this sense, the “shortest day of the year” is also the “longest day of the year!”

Thursday night into Friday morning, December 21 to 22, 2023, the bright planet Jupiter will appear near the waxing gibbous Moon. Jupiter will be 8 degrees to the lower left of the Moon as evening twilight ends (at 5:53 PM EST). The Moon will reach its highest in the sky for the night 2 hours later (at 7:53 PM) with Jupiter 7 degrees to the left. By the time the Moon sets on the west-northwestern horizon (at 2:50 AM) Jupiter will be 4 degrees to the upper left of the Moon.

Friday afternoon, December 22, 2023, the planet Mercury will be passing between the Earth and the Sun as seen from the Earth, called inferior conjunction. Planets that orbit inside of the orbit of Earth can have two types of conjunctions with the Sun, inferior (when passing between the Earth and the Sun) and superior (when passing on the far side of the Sun as seen from Earth). Mercury will be shifting from the evening sky to the morning sky and will begin emerging from the glow of dawn on the east-southeastern horizon in late December (depending upon viewing conditions).

Friday evening, December 22, 2023, the waxing gibbous Moon will have shifted to the other side of the bright planet Jupiter, with Jupiter appearing 6.5 degrees to the upper right of the Moon. Jupiter will appear to shift clockwise around the Moon, moving farther away as the night progresses.

Saturday evening into Sunday morning, December 23 to 24, 2023, the Pleiades star cluster will appear near the waxing gibbous Moon. The Pleiades will be about 6 degrees to the lower left as evening twilight ends (at 5:54 PM EST) and will shift clockwise around the Moon, appearing about 4 degrees to the upper left by the time the Moon reaches its highest in the sky (at 9:34 PM). By the time the Moon sets on the west-northwestern horizon (at 5:11 AM) the Pleiades will be less than 2 degrees to the upper right of the Moon. Due to the glare of the nearly full Moon, it may be difficult to see the Pleiades without very clear and dark skies or binoculars.

As mentioned above, the next full Moon will be Tuesday evening, December 26, 2023, at 7:33 PM EST. This will be on Wednesday in Coordinated Universal Time (UTC) and for most of Eurasia, Africa, and Australia. Many commercial calendars use UTC and will show this full Moon on Wednesday. The Moon will appear full for 3 days, from Monday evening to Thursday morning.

Wednesday evening into Thursday morning, December 27 to 28, 2023, the bright star Pollux will appear near the still full Moon. As evening twilight ends (at 5:56 PM EST) Pollux will be 6.5 degrees to the lower left of the Moon low on the east-northeastern horizon. By the time the Moon reaches its highest in the sky for the night 7 hours later (at 1:15 AM) Pollux will be 3 degrees to the upper left. As morning twilight begins (at 6:22 AM) Pollux will be 2.5 degrees to the upper right of the Moon.

Thursday morning, December 28, 2023, will be the first morning the planet Mercury will be above the east-southeastern horizon as morning twilight begins (at 6:22 AM EST).

Thursday night, December 28, 2023, the waning gibbous Moon will have shifted to the other side of the bright star Pollux. As the Moon rises (at 6:22 PM EST) above the east-northeastern horizon 25 minutes after evening twilight ends, Pollux will be 7 degrees to the upper right of the Moon, and the pair will separate as the night progresses.

Saturday night into Sunday morning, December 30 to 31, 2023, the bright star Regulus will appear near the waning gibbous Moon. As Regulus rises above the east-northeastern horizon (at 8:59 PM EST) it will be 5.5 degrees to the lower right of the Moon. By the time the Moon reaches its highest in the sky for the night (at 3:38 AM) Regulus will be 3.5 degrees below the Moon. As morning twilight begins (at 6:23 AM) Regulus will be 3 degrees to the lower left of the Moon.

Monday morning, January 1, 2024, at 10:29 AM EST, the Moon will be at apogee, its farthest from the Earth for this orbit.

Tuesday evening, January 2, 2024, the Earth will be at perihelion, the closest we get to the Sun in our orbit. Between perihelion and 6 months later at aphelion there is about a 6.7% difference in the intensity of the sunlight reaching the Earth, one of the reasons the seasons in the Southern hemisphere are more extreme than in the Northern Hemisphere. Perihelion is also when the Earth is moving the fastest in its orbit around the Sun, so if you run east at local midnight, you will be moving about as fast as you can (at least in Sun-centered coordinates) for your location. Wednesday evening, January 3, 2024, the waning Moon will appear half-full as it reaches its last quarter at 10:31 PM EST.

The Quadrantids (010 QUA) meteor shower is predicted to peak early Thursday morning, January 4, 2024. The best time to look may be the hour or two before the Moon rises (at 2:29 AM EST). See the meteor shower summary above for more information.

Friday morning, January 5, 2024, the bright star Spica will appear to the upper right of the waning crescent Moon. As the Moon rises on the east-southeastern horizon (at 1:25 AM EST) Spica will be 4 degrees to the upper right. By the time morning twilight begins (at 6:24 AM) Spica will be 5.5 degrees to the upper right.

Ignoring Daylight Savings Time, for the Washington, DC area and similar latitudes, (I’ve not checked elsewhere), Friday, January 5, 2024, will be the morning with the latest sunrise of the year, 7:26:56 AM EST.

Sunday morning, January 7, 2024, as morning twilight begins (at 6:24 AM EST), the waning crescent Moon will be 22 degrees above the south-southeastern horizon, with the bright planet Venus to the lower left at 15 degrees above the southeastern horizon, the bright star Antares to the lower right of Venus at 11 degrees above the horizon, and the planet Mercury farther to the lower left of Venus at 5 degrees above the east-southeastern horizon. The planet Mars will join this lineup 8 minutes later, rising in the glow of dawn to the lower left of Mercury.

Monday morning, January 8, 2024, the Moon, Venus, and Antares will appear clustered together above the southeastern horizon, with Mercury farther to the lower left. As morning twilight begins (at 6:24 AM EST) the bright planet Venus will appear 7 degrees to the upper left of the waning crescent Moon with the bright star Antares 1.5 degrees to the lower left of the Moon. The planet Mercury will be farther to the lower left of the Moon, Venus, and Antares, this being the morning when Mercury will be at its highest as twilight begins, a little over 6 degrees above the east-southeastern horizon. Mars will rise 7 minutes later, joining this grouping.

By Tuesday morning, January 9, 2024, the Moon will have shifted to 8 degrees to the lower right of Mercury, appearing only 3 degrees above the southeastern horizon as morning twilight begins (at 6:24 AM EST). The Moon will be a thin crescent and may be hard to see. Mars will rise in the glow of dawn 7 minutes later to the lower left of Mercury.

Thursday morning, January 11, 2024, at 6:57 AM EST, will be the new Moon, when the Moon passes between the Earth and the Sun and will not be visible from the Earth. The day of or the day after the New Moon usually marks the start of the new month for most lunisolar calendars. Sundown on Wednesday, January 10, marks the start of Shevat in the Hebrew calendar. The twelfth month of the Chinese year of the Rabbit starts on January 11.

Friday morning, January 12, 2024, will be when the planet Mercury reaches its greatest angular separation from the Sun as seen from the Earth for this apparition (called greatest elongation). Because the angle of the line between the Sun and Mercury and the horizon changes, when Mercury and the Sun appear farthest apart as seen from the Earth is not always when Mercury appears highest above the east-southeastern horizon as morning twilight begins, which occurred January 8.

In the Islamic calendar the months traditionally start with the first sighting of the waxing crescent Moon. Many Muslim communities now follow the Umm al-Qura Calendar of Saudi Arabia, which uses astronomical calculations to start months in a more predictable way. Using this calendar, sundown on Friday evening, January 12, 2024, will probably mark the beginning of Rajab, the seventh month of the Islamic calendar. Rajab is one of the four sacred months in which warfare and fighting are forbidden.

Saturday morning, January 13, 2024, at 5:36 AM EST, the Moon will be at perigee, its closest to the Earth for this orbit.

Sunday evening, January 14, 2024, the planet Saturn will appear to the lower right of the waxing crescent Moon. The pair will be 7 degrees apart as evening twilight ends (at 6:11 PM EST) and Saturn will set first on the west-southwestern horizon a little over 2 hours later (at 8:26 PM).

Wednesday evening, January 17, 2024, the Moon will appear half-full as it reaches its first quarter at 10:53 PM EST.

Thursday evening into early Friday morning, January 18 to 19, 2024, the bright planet Jupiter will appear below the waxing gibbous Moon. Jupiter will be 3 degrees to the lower right of the Moon as evening twilight ends (at 6:15 PM EST) and will be 6 degrees below the Moon by the time Jupiter sets on the west-northwestern horizon 7 hours later (at 1:17 AM).

Saturday morning, January 20, 2024, will be the first morning that the planet Mars will be above the east-southeastern horizon as morning twilight begins (at 6:22 AM EST).

Saturday evening into Sunday morning, January 20 to 21, 2024, the Pleiades star cluster will appear near the waxing gibbous Moon. The Pleiades will be 5 degrees to the upper right of the Moon as evening twilight ends (at 6:17 PM EST). The Moon will reach its highest for the night 2 hours later (at 8:23 PM) with the Pleiades 6 degrees to the right. By the time the Pleiades set on the west-northwestern horizon (at around 3:25 AM) they will be 9 degrees to the lower right of the Moon.

Late Tuesday night into Wednesday morning, January 23 to 24, 2024, the bright star Pollux will appear near the nearly full Moon. As evening twilight ends (at 6:20 PM EST) Jupiter will be 10 degrees to the lower left of the Moon, but will shift closer as it swings clockwise around the Moon. When the Moon reaches its highest for the night 5 hours later (at 11:08 PM) Jupiter will be 8 degrees to the left of the Moon. By the time morning twilight begins (at 6:20 AM) Jupiter will be 5 degrees above the Moon.

Thursday night into Friday morning, January 24 to 25, 2024, the Moon will have shifted to the other side of the bright star Pollux. Pollux will appear 3.5 degrees above the Moon as evening twilight ends (at 6:21 PM EST) and will appear to swing clockwise around the Moon as they move apart. When the Moon reaches its highest for the night (at midnight) Pollux will be 5.5 degrees to the upper right. As morning twilight begins (at 6:19 AM) Pollux will be 8 degrees to the lower right of the Moon.

The full Moon after next will be Thursday afternoon, January 25, 2024, at 12:54 PM EST. This will be on Friday morning from Myanmar time eastward to the International Dateline in the mid-Pacific. The Moon will appear full for about 3 days around this time, from around midnight Wednesday morning through about midnight Friday night.

About the Author

Gordon Johnston

Gordon Johnston

Program Executive (Retired) – NASA Headquarters

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      Marshall Space Flight Center, Huntsville, Ala. 
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      Apollo 11
      For Apollo 11 astronauts Neil A. Armstrong, Michael Collins, and Edwin E. “Buzz” Aldrin, their busy August 1969 postflight schedule continued into September with events throughout the United States and beyond. These included attending hometown parades, dedicating a stamp to commemorate their historic mission, unveiling a display of a Moon rock they collected, addressing a Joint Meeting of Congress, and visiting contractor facilities that built parts of their rocket and spacecraft. They capped off the hectic month with their departure, accompanied by their wives, on a presidential round-the-world goodwill tour that lasted into early November.

      Left: Neil A. Armstrong at his hometown parade in Wapakoneta, Ohio. Image credit: Ohio Historical Society. Middle: Edwin E. “Buzz” Aldrin at his hometown parade in Montclair, New Jersey. Image credit: Star-Register. Right: Michael Collins at his adopted hometown parade in New Orleans, Louisiana. Image credit: AP Photo.
      On Sep. 6, each astronaut appeared at hometown events held in their honor. Apollo 11 Commander Armstrong’s hometown of Wapakoneta, Ohio, welcomed him with a parade and other events.  Montclair, New Jersey, held a parade to honor hometown hero Lunar Module Pilot (LMP) Aldrin. And New Orleans, Louisiana, the adopted hometown of Command Module Pilot (CMP) Michael Collins, honored him with a parade.

      Left: Apollo 11 astronauts Michael Collins, left, Neil A. Armstrong, and Edwin E. “Buzz” Aldrin with Postmaster General Winton M. Blount display an enlargement of the stamp commemorating the first Moon landing. Right: Aldrin, left, Collins, and Armstrong examine a Moon rock with Smithsonian Institution Director General of Museums Frank A. Taylor.
      Three days later, the astronauts reunited in Washington, D.C., where they appeared at the dedication ceremony of a new postage stamp that honored their mission. The U.S. Postal Service had commissioned artist Paul Calle in 1968 to design the stamp. The Apollo 11 astronauts had carried the stamp’s master die to the Moon aboard the Lunar Module (LM) Eagle and after its return to Earth the Postal Service used it to make the printing pages for the 10¢ postage stamp. At the National Postal Forum, Armstrong, Collins, and Aldrin unveiled the stamp together with Postmaster General Winton M. Blount, and each astronaut received an album with 30 of the “First Man on the Moon” stamps. On Sep. 15, the crew returned to Washington to present a two-pound rock they collected in the Sea of Tranquility during their historic Moon walk to Frank A. Taylor, the Director General of Museums at the Smithsonian Institution in Washington, D.C. The rock went on public display two days later at the Smithsonian’s Arts and Industries Building, the first time the public could view a Moon rock. 

      Left: Apollo 11 astronauts Michael Collins, left, Edwin E. “Buzz Aldrin, and Neil A. Armstrong each addressed a Joint Meeting of Congress, with Vice President Spiro T. Agnew and Speaker of the House John W. McCormack seated behind them. Middle: Apollo 11 astronauts’ wives Joan Aldrin, left, Patricia Collins, and Janet Armstrong receive recognition in the Visitors Gallery of the House Chamber. Right: The Apollo 11 astronauts and their wives cut at a cake at a reception at the Capitol.
      With their wives observing from the Visitors Gallery of the House of Representatives, on Sep. 16 Armstrong, Aldrin, and Collins addressed a Joint Meeting of Congress. In this same chamber in May 1961, President John F. Kennedy committed the nation to land a man on the Moon and return him safely to the Earth before the end of decade. In a sense, the astronauts reported on the safe and successful completion of that challenge. Speaker of the House John W. McCormack introduced the astronauts to the gathering, as Vice President Spiro T. Agnew looked on. Each astronaut reflected on the significance of the historic mission.
      Armstrong noted that their journey truly began in the halls of Congress when the Space Act of 1958 established NASA. Aldrin commented that “the Apollo lesson is that national goals can be met when there is a strong enough will to do so.” Collins shared a favorite quotation of his father’s to describe the value of the Apollo 11 mission: “He who would bring back the wealth of the Indies must take the wealth of the Indies with him.” Armstrong closed with, “We thank you, on behalf of all the men of Apollo, for giving us the privilege of joining you in serving – for all mankind.” After their speeches, the astronauts presented one American flag each to Vice President Agnew in his role as President of the Senate and to Speaker McCormack. The flags, that had flown over the Senate and House of Representatives, had traveled to the Moon and back with the astronauts. Speaker McCormack recognized the astronauts’ wives Jan Armstrong, Joan Aldrin, and Pat Collins for their contributions to the success of the Apollo 11 mission.

      Left: Neil A. Armstrong and Michael Collins address North American Rockwell employees in Downey, California. Right: Presidential Boeing VC-137B jet at Ellington Air Force Base in Houston to take the Apollo 11 astronauts and their wives on the Giantstep goodwill world tour. 
      On Sep. 26, Armstrong and Collins visited two facilities in California of North American Rockwell (NAR) Space Division, the company that built parts of the Saturn V rocket and Apollo 11 spacecraft. First, they stopped at the Seal Beach plant that built the S-II second stage of the rocket, where 3,000 employees turned out to welcome them. Armstrong commented to the assembled crowd that during the July 16, 1969, liftoff, “the S-II gave us the smoothest ride ever.” Collins added that despite earlier misgivings about using liquid hydrogen as a rocket fuel, “after the ride you people gave us, I sure don’t have doubts any longer.” About 7,000 employees greeted the two astronauts and showered them with confetti at their next stop, the facility in Downey that built the Apollo Command and Service Modules. Both Armstrong and Collins thanked the team for building an outstanding spacecraft that took them to the Moon and returned them safely to Earth. The astronauts inspected the Command Module (CM) for Apollo 14, then under construction at the plant.
      On the morning of Sep. 29, a blue and white Boeing VC-137B presidential jet touched down at Ellington Air Force Base in Houston. Neil and Jan Armstrong, Buzz and Joan Aldrin, and Mike and Pat Collins boarded the plane and joined their entourage of State Department and NASA support personnel. They departed Houston for Mexico City, the first stop on the Apollo 11 Giantstep goodwill world tour. They didn’t return to the United States until Nov. 5, having visited 29 cities in 24 countries, just nine days before Apollo 12 took off on humanity’s second journey to land on the Moon.

      Distribution of Apollo 11 lunar samples to scientists at the Lunar Receiving Laboratory at the Manned Spacecraft Center, now NASA’s Johnson Space Center in Houston.
      Back in Houston, distribution to scientists of samples of the lunar material returned by the Apollo 11 astronauts began on Sep. 17 at the Lunar Receiving Laboratory (LRL) at the Manned Spacecraft Center (MSC), now NASA’s Johnson Space Center in Houston. Daniel H. Anderson, curator of lunar samples at the LRL, supervised the distribution of approximately 18 pounds – about one-third of the total Apollo 11 lunar material – to 142 principal investigators from the United States and eight other countries according to prior agreements. The scientists examined the samples at their home institutions and reported their results at a conference in Houston in January 1970. They returned to the LRL any of the samples not destroyed during the examination process.
      Apollo 12
      In September 1969, NASA continued preparations for the second Moon landing mission, Apollo 12, scheduled for launch on Nov. 14. The Apollo 12 mission called for a pinpoint landing in Oceanus Procellarum (Ocean of Storms) near where the robotic spacecraft Surveyor 3 had touched down in April 1967. They planned to stay on the lunar surface for about 32 hours, compared to Apollo 11’s 21 hours, and conduct two surface spacewalks totaling more than 5 hours. During the first of their two excursions, the astronauts planned to deploy the Apollo Lunar Surface Experiments Package (ALSEP) and collect lunar samples. During the second spacewalk, they planned to visit Surveyor 3 and remove some of its equipment for return to Earth and collect additional lunar samples. The Apollo 12 prime crew of Commander Charles “Pete” Conrad, CMP Richard F. Gordon, and LMP Alan L. Bean and their backups David R. Scott, Alfred M. Worden, and James B. Irwin continued intensive training for the mission.

      Left: The Apollo 12 Saturn V exits the Vehicle Assembly Building on its way to Launch Pad 39A. Middle: The Apollo 12 Saturn V rolling up the incline as it approaches Launch Pad 39A. Right: Apollo 12 astronauts Alan L. Bean, left, Richard F. Gordon, and Charles “Pete” Conrad pose in front of their Saturn V during the rollout to the pad.
      On Sep. 8, the Saturn V rocket with the Apollo 12 spacecraft on top rolled out from Kennedy Space Center’s (KSC) Vehicle Assembly Building to Launch Pad 39A. The rocket made the 3.5-mile trip to the pad in about 6 hours, with Conrad, Gordon, and Bean on hand to observe the rollout. Workers at the pad spent the next two months thoroughly checking out the rocket and spacecraft to prepare it for its mission to the Moon. The two-day Flight Readiness Test at the end of September ensured that the launch vehicle and spacecraft systems were in a state of flight readiness. In addition to spending many hours in the spacecraft simulators, Conrad and Bean as well as their backups Scott and Irwin rehearsed their lunar surface spacewalks including the visit to Surveyor 3. Workers at NASA’s Jet Propulsion Laboratory in Pasadena, California, shipped an engineering model of the robotic spacecraft to KSC, and for added realism, engineers there mounted the model on a slope to match its relative position on the interior of the crater in which it stood on the Moon. Conrad and Scott used the Lunar Landing Training Vehicle (LLTV) at Ellington Air Force Base (AFB) near MSC to train for the final 200 feet of the descent to the lunar surface.

      Left: Apollo 12 astronauts Alan L. Bean, left, and Charles “Pete” Conrad rehearse their lunar surface spacewalks at NASA’s Kennedy Space Center in Florida. Middle: Conrad trains in the use of the Hasselblad camera he and Bean will use on the Moon. Right: Bean, left, and Conrad train with an engineering model of a Surveyor spacecraft.
      With regard to lunar geology training, the Apollo 12 astronauts had one advantage over their predecessors – they could inspect actual Moon rocks and soil returned by the Apollo 11 crew. On Sep. 19, Conrad and Bean arrived at the LRL, where Lunar Sample Curator Anderson met them. Anderson brought out a few lunar rocks and some lunar soil that scientists had already tested and didn’t require to be stored under vacuum or other special conditions, allowing Conrad and Bean to examine them closely and compare them with terrestrial rocks and soil they had seen during geology training field trips. This first-hand exposure to actual lunar samples significantly augmented Conrad and Bean’s geology training. To highlight the greater emphasis placed on lunar surface science, the Apollo 12 crews (prime and backup) went on six geology field trips compared to just one for the Apollo 11 crews.

      Left: Apollo 12 astronauts Charles “Pete” Conrad, left, Richard F. Gordon, and Alan L. Bean prepare for water egress training aboard the MV Retriever in the Gulf of Mexico. Middle: Wearing Biological Isolation Garments and assisted by a decontamination officer, standing in the open hatch, Apollo 12 astronauts await retrieval in the life raft. Right: The recovery helicopter hoists the third crew member using a Billy Pugh net.
      Although the Apollo 11 astronauts returned from the Moon in excellent health and scientists found no evidence of any harmful lunar microorganisms, NASA managers still planned to continue the postflight quarantine program for the Apollo 12 crew members, their spacecraft, and the lunar samples they brought back. The first of these measures involved the astronauts donning Biological Isolation Garments (BIG) prior to exiting the spacecraft after splashdown. Since they didn’t carry the BIGs with them to the Moon and back, one of the recovery personnel, also clad in a BIG, opened the hatch to the capsule after splashdown and handed the suits to the astronauts inside, who donned them before exiting onto a life raft.
      On Sep. 20, the Apollo 12 astronauts rehearsed these procedures, identical to the ones used after the first Moon landing mission, in the Gulf of Mexico near Galveston, Texas, using a boilerplate Apollo CM and supported by the Motorized Vessel (MV) Retriever. As it turned out, NASA later removed the requirement for the crew to wear BIGs, and after their splashdown the Apollo 12 crew wore overalls and respirators.
      Apollo 13

      Left: Apollo 13 prime crew members James A. Lovell and Thomas K. “Ken” Mattingly in the Command Module (CM) for an altitude chamber test – Fred W. Haise is out of the picture at right – at NASA’s Kennedy Space Center in Florida. Middle: Apollo 13 backup astronaut John L. “Jack” Swigert prepares to enter the CM for an altitude chamber test. Right: Apollo 13 backup crew members John W. Young, left, and Swigert in the CM for an altitude chamber test – Charles M. Duke is out of the picture at right.
      Preparations for Apollo 13 continued in parallel. In KSC’s Manned Spacecraft Operations Building (MSOB), Apollo 13 astronauts completed altitude chamber tests of their mission’s CM and LM. Prime crew members Commander James A. Lovell, CMP Thomas K. “Ken” Mattingly, and LMP Fred W. Haise completed the CM altitude test on Sep. 10, followed by their backups John W. Young, Jack L. Swigert, and Charles M. Duke on Sep. 17. The next day, Lovell and Haise completed the altitude test of the LM, followed by Young and Duke on Sep. 22. At the time of these tests, Apollo 13 planned to launch on March 12, 1970, on a 10-day mission to visit the Fra Mauro highlands region of the Moon. To prepare for their lunar surface excursions, Lovell, Haise, Young, and Duke, accompanied by geologist-astronaut Harrison H. “Jack” Schmitt and Caltech geologist Leon T. “Lee” Silver, spent the last week of September in Southern California’s Orocopia Mountains immersed in a geology boot camp.
      Apollo 14 and 15

      Left: At North American Rockwell’s (NAR) Downey, California, facility, workers assemble the Apollo 14 Command Module (CM), left, and Service Module. Right: NAR engineers work on the CM originally intended for Apollo 15.
      Looking beyond Apollo 13, the Apollo 14 crew of Commander Alan B. Shepard, CMP Stuart A. Roosa, and LMP Edgar D. Mitchell and their backups Eugene A. Cernan, Ronald E. Evans, and Joe H. Engle had started training for their mission planned for mid-year 1970. At the NAR facility in Downey, engineers prepared the CM and SM and shipped them to KSC in November 1969. Also at Downey, workers continued assembling the CM and SM planned for the Apollo 15 mission in late 1970. As events transpired throughout 1970, plans for those two missions changed significantly.
      NASA management changes

      Left: Portrait of NASA astronaut James A. McDivitt. Right: NASA Administrator Thomas O. Paine, right, swears in George M. Low as NASA deputy administrator.
      On Sept. 25, NASA appointed veteran astronaut James A. McDivitt as the Manager of the Apollo Spacecraft Program Office at MSC. McDivitt, selected as an astronaut in 1962, commanded two spaceflights, Gemini IV in June 1965 that included the first American spacewalk and Apollo 9 in March 1969, the first test of the LM in Earth orbit. He succeeded George M. Low who, in that position since April 1967, led the agency’s efforts to recover from the Apollo 1 fire and originated the idea to send Apollo 8 on a lunar orbital mission. Under his tenure, NASA successfully completed five crewed Apollo missions including the first human Moon landing. MSC Director Robert R. Gilruth initially assigned Low to plan future programs until Nov. 13, when President Richard M. Nixon nominated him as NASA deputy administrator. The Senate confirmed Low’s nomination on Nov. 25, and NASA Administrator Thomas O. Paine swore him in on Dec. 3. Low filled the position vacant since March 20, 1969.
      To be continued …
      News from around the world in September 1969:
      September 2 – The first automated teller machine is installed at a Chemical Bank branch in Rockville Center, New York.
      September 13 – Hannah-Barbera’s “Scooby Doo, Where Are You?” debuts on CBS.
      September 20 – John Lennon announces in a private meeting his intention to leave The Beatles.
      September 22 – San Francisco Giant Willie Mays becomes the second player, after Babe Ruth, to hit 600 career home runs.
      September 23 – “Butch Cassidy and the Sundance Kid,” starring Paul Newman and Robert Redford, premieres.
      September 24 – Tokyo’s daily newspaper Asahi Shimbun announced that it would be the first to deliver an edition electronically, using a FAX machine that could print a page in five minutes.
      September 26 – Apple Records releases “Abbey Road,” The Beatles’ 11th studio album.
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    • By NASA
      3 min read
      Preparations for Next Moonwalk Simulations Underway (and Underwater)
      While astronaut Gene Cernan was on the lunar surface during the Apollo 17 mission, his spacesuit collected loads of lunar dust. The gray, powdery substance stuck to the fabric and entered the capsule causing eye, nose, and throat irritation dubbed “lunar hay fever.” Credit: NASACredit: NASA Moon dust, or regolith, isn’t like the particles on Earth that collect on bookshelves or tabletops – it’s abrasive and it clings to everything. Throughout NASA’s Apollo missions to the Moon, regolith posed a challenge to astronauts and valuable space hardware.

      During the Apollo 17 mission, astronaut Harrison Schmitt described his reaction to breathing in the dust as “lunar hay fever,” experiencing sneezing, watery eyes, and a sore throat. The symptoms went away, but concern for human health is a driving force behind NASA’s extensive research into all forms of lunar soil.
      The need to manage the dust to protect astronaut health and critical technology is already beneficial on Earth in the fight against air pollution.

      Working as a contributor on a habitat for NASA’s Next Space Technologies for Exploration Partnerships (NextSTEP) program, Lunar Outpost Inc. developed an air-quality sensor system to detect and measure the amount of lunar soil in the air that also detects pollutants on Earth. 

      Originally based in Denver, the Golden, Colorado-based company developed an air-quality sensor called the Space Canary and offered the sensor to Lockheed Martin Space for its NextSTEP lunar orbit habitat prototype. After the device was integrated into the habitat’s environmental control system, it provided distinct advantages over traditional equipment.

      Rebranded as Canary-S (Solar), the sensor is now meeting a need for low-cost, wireless air-quality and meteorological monitoring on Earth. The self-contained unit, powered by solar energy and a battery, transmits data using cellular technology. It can measure a variety of pollutants, including particulate matter, carbon monoxide, methane, sulfur dioxide, and volatile organic compounds, among others. The device sends a message up to a secure cloud every minute, where it’s routed to either Lunar Outpost’s web-based dashboard or a customer’s database for viewing and analysis.

      The oil and gas industry uses the Canary-S sensors to provide continuous, real-time monitoring of fugitive gas emissions, and the U.S. Forest Service uses them to monitor forest-fire emissions.

      “Firefighters have been exhibiting symptoms of carbon monoxide poisoning for decades. They thought it was just part of the job,” explained Julian Cyrus, chief operating officer of Lunar Outpost. “But the sensors revealed where and when carbon monoxide levels were sky high, making it possible to issue warnings for firefighters to take precautions.”

      The Canary-S sensors exemplify the life-saving technologies that can come from the collaboration of NASA and industry innovations. 
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      Preparations for Next Moonwalk Simulations Underway (and Underwater)
      This artist’s concept depicts NASA’s Europa Clipper spacecraft in orbit around Jupiter. The mission is targeting an Oct. 10, 2024, launch.NASA/JPL-Caltech The first NASA spacecraft dedicated to studying an ocean world beyond Earth, Europa Clipper aims to find out if the ice-encased moon Europa could be habitable.
      NASA’s Europa Clipper spacecraft, the largest the agency has ever built for a planetary mission, will travel 1.8 billion miles (2.9 billion kilometers) from the agency’s Kennedy Space Center in Florida to Europa, an intriguing icy moon of Jupiter. The spacecraft’s launch period opens Thursday, Oct. 10.
      Learn more about how NASA’s Europa Clipper came together – and how it will explore an ocean moon of Jupiter. Credit: NASA/JPL-Caltech  Data from previous NASA missions has provided scientists with strong evidence that an enormous salty ocean lies underneath the frozen surface of the moon. Europa Clipper will orbit Jupiter and conduct 49 close flybys of the moon to gather data needed to determine whether there are places below its thick frozen crust that could support life.
      Here are eight things to know about the mission:
      1. Europa is one of the most promising places to look for currently habitable conditions beyond Earth.
      There’s scientific evidence that the ingredients for life — water, the right chemistry, and energy — may exist at Europa right now. This mission will gather the information scientists need to find out for sure. The moon may hold an internal ocean with twice the water of Earth’s oceans combined, and it may also host organic compounds and energy sources under its surface. If the mission determines that Europa is habitable, it would mean there may be more habitable worlds in our solar system and beyond than we have imagined.
      2. The spacecraft will fly through one of the most punishing radiation environments in our solar system — second only to the Sun’s.
      Jupiter is surrounded by a gigantic magnetic field 20,000 times stronger than Earth’s. As the field spins, it captures and accelerates charged particles, creating radiation that can damage spacecraft. Mission engineers designed a spacecraft vault to shield sensitive electronics from radiation, and they plotted orbits that will limit the time Europa Clipper spends in most radiation-heavy areas around Jupiter.
      3. Europa Clipper will orbit Jupiter, studying Europa while flying by the moon dozens of times.
      The spacecraft will make looping orbits around Jupiter that bring it close to Europa for 49 science-dedicated flybys. On each orbit, the spacecraft will spend less than a day in Jupiter’s dangerous radiation zone near Europa before zipping back out. Two to three weeks later, it will repeat the process, making another flyby.
      4. Europa Clipper features NASA’s most sophisticated suite of science instruments yet.
      To determine if Europa is habitable, Europa Clipper must assess the moon’s interior, composition, and geology. The spacecraft carries nine science instruments and a gravity experiment that uses the telecommunications system. In order to obtain the best science during each flyby, all the science instruments will operate simultaneously on every pass. Scientists will then layer the data together to paint a full picture of the moon.
      5. With antennas and solar arrays fully deployed, Europa Clipper is the largest spacecraft NASA has ever developed for a planetary mission.
      The spacecraft extends 100 feet (30.5 meters) from one end to the other and about 58 feet (17.6 meters) across. That’s bigger than a basketball court, thanks in large part to the solar arrays, which need to be huge so they can collect enough sunlight while near Jupiter to power the instruments, electronics, and other subsystems.
      6. It’s a long journey to Jupiter.
      Jupiter is on average some 480 million miles (about 770 million kilometers) from Earth; both planets are in motion, and a spacecraft can carry only a limited amount of fuel. Mission planners are sending Europa Clipper past Mars and then Earth, using the planets’ gravity as a slingshot to add speed to the spacecraft’s trek. After journeying about 1.8 billion miles (2.9 billion kilometers) over 5½ years, the spacecraft will fire its engines to enter orbit around Jupiter in 2030.
      7. Institutions across the U.S. and Europe have contributed to Europa Clipper.
      Currently, about a thousand people work on the mission, including more than 220 scientists from both the U.S. and Europe. Since the mission was officially approved in 2015, more than 4,000 people have contributed to Europa Clipper, including teams who work for contractors and subcontractors.
      8. More than 2.6 million of us are riding along with the spacecraft, bringing greetings from one water world to another.
      As part of a mission campaign called “Message in a Bottle,” the spacecraft is carrying a poem by U.S. Poet Laureate Ada Limón, cosigned by millions of people from nearly every country in the world. Their names have been stenciled onto a microchip attached to a tantalum metal plate that seals the spacecraft’s electronics vault. The plate also features waveforms of people saying the word “water” in over 100 spoken languages.
      More About Europa Clipper
      Europa Clipper’s three main science objectives are to determine the thickness of the moon’s icy shell and its interactions with the ocean below, to investigate its composition, and to characterize its geology. The mission’s detailed exploration of Europa will help scientists better understand the astrobiological potential for habitable worlds beyond our planet.
      Managed by Caltech in Pasadena, California, NASA’s Jet Propulsion Laboratory leads the development of the Europa Clipper mission in partnership with the Johns Hopkins Applied Physics Laboratory in Laurel, Maryland, for NASA’s Science Mission Directorate in Washington. The main spacecraft body was designed by APL in collaboration with JPL and NASA’s Goddard Space Flight Center in Greenbelt, Maryland, NASA’s Marshall Space Flight Center in Huntsville, Alabama, and NASA’s Langley Research Center in Hampton, Virginia. The Planetary Missions Program Office at Marshall executes program management of the Europa Clipper mission.
      NASA’s Launch Services Program, based at Kennedy, manages the launch service for the Europa Clipper spacecraft, which will launch on a SpaceX Falcon Heavy rocket from Launch Complex 39A at Kennedy.
      Find more information about Europa here:
      https://europa.nasa.gov
      Europa Clipper Teachable Moment See Europa’s Chaos Terrain in Crisp Detail Europa Clipper Gets Its Super-Size Solar Arrays News Media Contacts
      Gretchen McCartney
      Jet Propulsion Laboratory, Pasadena, Calif.
      818-393-6215
      gretchen.p.mccartney@jpl.nasa.gov
      Karen Fox / Molly Wasser
      NASA Headquarters, Washington
      202-358-1600
      karen.c.fox@nasa.gov / molly.l.wasser@nasa.gov
      2024-125
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