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By NASA
29 Min Read The Next Full Moon is a Supermoon, and the Hunter’s Moon
A supermoon rises behind the U.S. Capitol, on March 9, 2020, in Washington. Credits:
NASA/Joel Kowsky The Next Full Moon is a Supermoon; the Hunter’s Moon; the Travel Moon, the Dying Grass Moon, or the Sanguine or Blood Moon; the start of Sukkoth; Sharad Purnima, Kumara Purnima, Kojagari Purnima, Navanna Purnima Kojagrat Purnima, or Kaumudi Purnima; the end of Vassa and Pavarana; the Thadingyut Festival Moon; the end of the Phaung Daw U Pagoda Festival; and Vap Poya.
The next full Moon will be Thursday morning, Oct. 17, 2024, at 7:26 a.m. EDT. This will be late Wednesday night for the International Date Line West time zone and early Friday morning from New Zealand Time eastwards to the International Date Line. The Moon will appear full for about three days around this time, from Tuesday evening through Friday morning.
This will be the third of four consecutive supermoons (and the brightest by a tiny margin).
As the full Moon after the Harvest Moon, this will be the Hunter’s Moon. The earliest written use of the term “Hunter’s Moon” identified in the Oxford English Dictionary is from 1710. According to the Farmer’s Almanac, with the leaves falling and the deer fattened, it is time to hunt. Since the harvesters have reaped the fields, hunters can easily see the animals that have come out to glean (and the foxes that have come out to prey upon them).
The Maine Farmer’s Almanac first published Native American names for the full Moons in the 1930s. Over time these names have become widely known and used.
According to this almanac, as the full Moon in October the Algonquin tribes in what is now the northeastern United States called this the Travel Moon, the Dying Grass Moon, or the Sanguine or Blood Moon. Some sources indicate that the Dying Grass, Sanguine, and Blood Moon names are related to the turning of the leaves and dying back of plants with the start of fall. Others indicate that the names Sanguine and Blood Moon are associated with hunting to prepare for winter. I have read that the name “Travel Moon” comes from observing the migration of birds and other animals preparing for the winter. I don’t know, but this name may also refer to the season when the more northern tribes would move down from the mountains for the winter. For example, both the Iroquois and Algonquin would hunt in the Adirondack Mountains during the summertime but leave in fall to avoid the harsh mountain winters.
As the full Moon in the Hebrew month of Tishrei, this full Moon falls near the start of Sukkoth, a 7-day holiday starting on the 15th day of the month. Sukkoth is also known as the Feast of Tabernacles or the Feast of the Ingathering. Sukkoth honors both the sheltering of the People of Israel during the 40 years in the wilderness in the Book of Leviticus as well as an ancient harvest festival in the Book of Exodus. Sukkot is named for the sukkah (booths or huts) traditionally built for the occasion that represent the temporary huts in which Israelites lived after escaping from Egypt. Families symbolically invite ancestors to share meals in the sukkah and spend as much time as possible there throughout the week. This year Sukkoth starts at sunset on October 16 and ends at sunset on October 23. See https://en.wikipedia.org/wiki/Sukkot for more information.
For Hindus, this is Sharad Purnima, also known as Kumara Purnima, Kojagari Purnima, Navanna Purnima Kojagrat Purnima, or Kaumudi Purnima. This is a harvest festival celebrated in a variety of ways. See https://en.wikipedia.org/wiki/Sharad_Purnima for more information.
For Buddhists, this Moon marks the end of Vassa, the three-month period of fasting for monks tied to the monsoons (Vassa is sometimes given the English names “Rains Retreat” or “Buddhist Lent”). There are numerous festivals and holy days associated with this Moon at the end of Vassa. Many Buddhists observe the holy day Pavarana on this day.
In Myanmar, this full Moon corresponds with the three-day Thadingyut Festival of Lights, also known as the Lighting Festival of Myanmar.
Also in Myanmar, this full Moon is near the end of the Phaung Daw U Pagoda Festival. This festival began on the first Waxing Moon day of the month of Thadingyut and will end a few days past this full Moon.
In Sri Lanka, this is Vap Poya, which is followed (usually within the lunar month) by the Kathina festival, during which people give gifts to the monks, particularly new robes (so this lunar month is sometimes called the Month of Robes).
In many traditional Moon-based calendars the full Moons fall on or near the middle of each month. This full Moon is near the middle of the ninth month of the Chinese year of the Dragon and Rabi’ al-Thani, also called Rabiʽ al-Akhir, the fourth month of the Islamic year.
As usual, the wearing of suitably celebratory celestial attire is encouraged in honor of the full Moon. Enjoy this harvest season, remember your ancestors, and consider camping out with your family. Here’s wishing you safe travels!
Summary of Key Celestial Events
Here are more celestial events between now and the full Moon after next (with specific times and angles based on the location of NASA Headquarters in Washington, D.C.):
As Autumn continues the daily periods of sunlight continue shortening. On Thursday, Oct. 17, (the day of the full Moon), morning twilight will begin at 6:22 a.m. EDT, sunrise will be at 7:20 a.m., solar noon will be at 12:53 p.m. when the Sun will reach its maximum altitude of 41.5 degrees, sunset will be at 6:26 p.m., and evening twilight will end at 7:24 p.m.. By Friday, Nov. 15, (the day of the full Moon after next), we will have switched from Daylight Saving to Standard Time. Morning twilight will begin at 5:51 a.m. EST, sunrise will be at 6:51 AM, solar noon will be at 11:53 a.m. when the Sun will reach its maximum altitude of 32.4 degrees, sunset will be at 4:54 p.m., and evening twilight will end at 5:55 p.m.
This should be a good season for Saturn viewing, especially through a backyard telescope. Saturn was at its closest and brightest the night of September 7. It will be shifting west each evening, making it higher in the sky and friendlier for evening viewing (particularly for children with earlier bedtimes). Through a telescope you should be able to see Saturn’s bright moon Titan and its rings. The rings are appearing thinner and will be edge-on to the Earth by early 2025. We won’t get the “classic” view of Saturn with its rings again until 2026.
Comets
Two comets might be visible during this lunar cycle. For both of these comets I recommend paying attention to the news and checking out local astronomy websites, as we should have better forecasts of how these comets are behaving as we get closer to the opportunities for prime viewing. Particularly for the newly discovered Comet C/2024 S1 (ATLAS), others (with newer information and better modeling tools) should be able to provide better guidance on when and where to look.
Comet C/2023 A3 (Tsuchinshan-ATLAS) has already survived its close pass by the Sun and will be its closest to the Earth on October 12 (five days before the full Moon). After its closest approach it will be in the evening sky as twilight ends. If it continues on its current brightness curve it should be visible with binoculars and (under good conditions) with the unaided eye for at least a few evenings after the 12th, dimming as it moves away from the Sun and the Earth. On October 12, as evening twilight ends (at 7:31 p.m. EDT) the comet will be 4 degrees above the western horizon to the right of Venus (at an estimated visual magnitude of 2.9). As twilight ends on October 13 it will be 10 degrees above the western horizon (magnitude 3), 12 degrees on October 14 (magnitude 3.2), 16 degrees on October 15 (magnitude 3.3), etc. Current brightness curves predict it will dim to magnitude 6.2 by the end of October (nearing the edge of visibility with the unaided eye under dark and clear conditions).
Comet C/2024 S1 (ATLAS) was discovered recently. It’s gotten a lot of attention because if it doesn’t break up as it approaches the Sun, it may become bright enough to see during the daytime. However, I want to avoid raising unrealistic expectations. From the information I’ve been able to find so far, I expect that at night this comet will only be visible with binoculars or a telescope, as its path will not bring it very close to the Earth. For the Washington, D.C. area (and similar latitudes) this comet will be above the horizon before morning twilight begins from now to October 21 as the comet falls towards the Sun. If it doesn’t break into pieces too small to see around closest approach, it should also be visible (with binoculars or a telescope) from November 2 to December 19 as the comet speeds away from the Sun.
However, it is a sungrazing comet and will be passing just a few solar radii from the surface of the Sun. This is so close that the sunlight will be more than 14,000 times brighter than at Earth. Sunlight this intense may cause it to break up and evaporate. But if it remains intact, based on the estimates I have while writing this, the comet will be bright enough to see during the daylight for about an hour or two around closest approach.
One brightness model estimates this comet will be brighter than magnitude -5 from 7:12 a.m. to 8:06 a.m. EDT. Based on this timing, Africa, Europe, and South America are best situated to see this daylight comet. From the East Coast of North America the comet at its brightest will be to the lower left of the Sun just after sunrise, which means we will be viewing it through more air, increasing the chance of interference from scattered sunlight and clouds.
To look for this comet during the short period when it is very close to the Sun, find out for your location which side of the Sun the comet will be on, then find something to block the Sun (e.g., a house or building, etc., the farther away the better) so you can look for the comet without staring at the Sun. Be careful and plan ahead, as it may be difficult to find a location that has both a clear view to the right part of the east-southeastern horizon and a large overhanging object to block the Sun while allowing you to see to the lower left of the Sun. I strongly recommend AGAINST using binoculars or a telescope because accidentally using high powered lenses to focus intense sunlight into your eyes is a blindingly bad idea.
If you are interested, here is some more background on Comet C/2024 S1 (ATLAS). Otherwise, skip this paragraph. This comet was discovered on Sept. 27, 2024, by one of the Asteroid Terrestrial-impact Last Alert System (ATLAS) telescopes in Hawaii. This comet’s orbit suggests it is part of a family of comets called Kreutz sungrazers that pass very close to the Sun. These comets are thought to be fragments of a large sungrazing comet, the Great Comet of 1106, that broke up as it swung around the Sun 918 years ago. This 1106 comet might itself be a fragment of an even larger sungrazing comet, possibly the Great Comet of 371 BC (also known as Aristotle’s Comet). This comet was so bright it cast shadows at night like the full Moon. Several other members of this comet family have been great comets, including the Great Comet of 1843 and the Great Comet of 1882. The most recent great comet from this family was Comet Ikeya–Seki in 1965. Since its launch in 1995, the Solar and Heliospheric Observatory (SOHO) satellite has observed more than 4000 smaller Kreutz sungrazers, some only a few meters across, with none of these smaller comets surviving their close pass by the Sun.
Meteor Showers
Five meteor showers are predicted to peak during this lunar cycle. Three meteor showers peak between October 18 and 24 when the light of the waning Moon will interfere, the most significant being the Orionids peaking on October 21. While the Orionids tend to be brighter than average and to peak at about 20 meteors per hour (under ideal conditions), the light of the waning gibbous Moon will make these harder to see this year, especially from our light-polluted urban areas. Two minor meteor showers will peak in early November. These showers are the Southern Taurids (peaking at 7 meteors per hour on November 5) and the Northern Taurids (peaking at 5 meteors per hour on November 12). These showers overlap to produce their highest combined rate around November 5, but this rate is low enough that seeing these meteors from urban locations will be difficult.
Evening Sky Highlights
On the evening of Thursday, Oct. 17, 2024 (the evening of the full Moon), as twilight ends (at 7:24 p.m. EDT), the rising Moon will be 9 degrees above the eastern horizon. Saturn will be 27 degrees above the southeastern horizon. Bright Venus will be 6 degrees above the west-southwestern horizon. Comet C/2023 A3 (Tsuchinshan-ATLAS) will be to the upper right of Venus at 22 degrees above the western horizon (at a visual magnitude of 3.7 if it continues to follow its current brightness curve). The bright star closest to overhead will be Deneb at 80 degrees above the northeastern horizon. Deneb (visual magnitude 1.3) is the 19th brightest star in our night sky and is the brightest star in the constellation Cygnus the swan. Deneb 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 but 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.
As this lunar cycle progresses, Saturn and the background of stars will appear to shift westward each evening (as the Earth moves around the Sun). Bright Venus will shift to the left along the southwestern horizon in the opposite direction as the stars, passing above the bright star Antares (they will appear 3 degrees apart at their closest on October 25). October 21 will be the first evening the planet Mercury will be above the west-southwestern horizon 30 minutes after sunset (an estimate of when it will first be visible in the glow of dusk). The waxing Moon will pass by Antares on November 3, Venus on November 4, and Saturn on November 10. November 11 will be when Mercury will first appear above the horizon as twilight ends.
By the evening of Friday, November 15 (the evening of the full Moon after next), as twilight ends at 5:55 p.m. EST, the rising Moon will be 14 degrees above the east-northeastern horizon with the Pleiades star cluster 5 degrees to the lower left. The brightest planet in the sky will be Venus at 12 degrees above the southwestern horizon. Next in brightness will be Mercury at less than a degree above the west-southwestern horizon. Saturn will be 38 degrees above the south-southeastern horizon. Comet C/2023 A3 (Tsuchinshan-ATLAS) will be 39 degrees above the west-southwestern horizon, with its current brightness curve predicting it will have faded to magnitude 8, too faint to see with the unaided eye. The bright star closest to overhead will still be Deneb at 79 degrees above the northwestern horizon.
Morning Sky Highlights
On the morning of Thursday, October 17, 2024 (the morning of the full Moon), as twilight begins at 6:22 a.m. EDT, the setting Moon will be 11 degrees above the western horizon. The brightest planet in the sky will be Jupiter at 63 degrees above the west-southwestern horizon. Mars will be at 72 degrees above the south-southeastern horizon. Comet C/2024 S1 (ATLAS) will be 6 degrees above the east-southeastern horizon but will likely be too dim to be seen without a telescope (current projection, magnitude 12.7). The bright star appearing closest to overhead will be Pollux, the 17th brightest star in our night sky and the brighter of the twin stars in the constellation Gemini, at 75 degrees above the southeastern horizon. Pollux is an orange tinted star about 34 lightyears from Earth. It is not quite twice the mass of our Sun but about 9 times the diameter and 33 times the brightness.
As this lunar cycle progresses, Jupiter, Mars, and the background of stars will appear to shift westward each evening. Comet C/2024 S1 (ATLAS), visible with binoculars or a telescope, will brighten but shift lower as it races towards the Sun, with October 21 the last morning it will be above the horizon as morning twilight begins (estimated magnitude of 11.2). The waning Moon will pass by the Pleiades star cluster on October 19, Jupiter on October 21, Mars and Pollux on October 23, Regulus on October 26, and Spica on October 31. Comet C/2024 S1 (ATLAS) will pass its closest to the Sun on the morning of October 28 (when, if the sky is very clear, it might be bright enough to see in the daylight for an hour or so around 7:39 a.m.). If this comet survives its close pass by the Sun, it may reemerge in the morning sky. November 2 will be the first morning it will be above the horizon as morning twilight begins (with an estimated magnitude of 10.5, visible with binoculars or a telescope).
By the morning of Friday, November 15 (the morning of the full Moon after next), as twilight begins (at 5:51 a.m. EST), the setting full Moon will be 7 degrees above the west-northwestern horizon. The brightest planet in the sky will be Jupiter at 35 degrees above the western horizon. Mars will be at 68 degrees above the southwestern horizon. Comet C/2024 S1 (ATLAS) will be 13 degrees above the southeastern horizon (estimated magnitude 14.2). The bright star appearing closest to overhead will still be Pollux at 69 degrees above the west-southwestern horizon (higher than Mars by about a half degree).
Detailed Daily Guide
.Here for your reference is a day-by-day listing of celestial events between now and the full Moon on October 17, 2024. The times and angles are based on the location of NASA Headquarters in Washington, D.C, and some of these details may differ for where you are (I use parentheses to indicate times specific to the D.C. area). If your latitude is significantly different than 39 degrees north (and especially for my Southern Hemisphere readers), I recommend using an astronomy app or a star-watching guide from a local observatory, news outlet, or astronomy club.
Saturday morning, October 12: At 11:10 a.m. EDT, Comet C/2023 A3 (Tsuchinshan-ATLAS) will be at its closest to Earth. Although it will be on the horizon as evening twilight ends the evening before (Friday), it may be hard to see. Our first chance to see it above the horizon as evening twilight ends (at 7:31 PM) will likely be Saturday evening, when the comet will be 4 degrees above the western horizon, similar in altitude and to the right of Venus.
As of September 28 this comet is still following a brightness curve that predicts it to be quite bright near closest approach and remain visible to unaided human eyes (under clear dark sky conditions) through the end of October. How bright the comet will be and how quickly it actually dims will depend upon the gas and dust it is giving off, which can vary quickly and unpredictably, but it should be an impressive show in the evenings after October 12.
The comet will likely dim as it moves away from the Earth, but also appear higher in the sky and set later each evening, giving us more time and darker skies to look for it. As evening twilight ends on October 13 it will be 10 degrees above the western horizon, 12 degrees on October 14, 16 degrees on October 15, etc. Current brightness curves predict it will still be around magnitude 6 by the end of October (still visible to the unaided eye under good conditions).
Monday evening, October 14: The planet Saturn will appear near the waxing gibbous Moon. As evening twilight ends (at 7:28 p.m. EDT) Saturn will be 4 degrees to the upper right. The Moon will reach its highest for the night about 3.5 hours later (at 10:53 p.m.) with Saturn 5 degrees to the lower right. The pair will continue to separate, with Saturn setting first 5 hours after that (at 4:09 a.m.). For parts of Southern Asia and Africa the Moon will block Saturn from view.
Wednesday evening, October 16: At 8:57 p.m. EDT (CSG 8:47), the Moon will be at perigee, its closest to the Earth for this orbit.
As mentioned above, the full Moon will be Thursday morning, Oct. 17, at 7:26 a.m. EDT. This will be late Wednesday night for the International Date Line West time zone and early Friday morning from New Zealand Time eastwards to the International Date Line. This will be the third of four consecutive supermoons (and the brightest by a tiny margin). The Moon will appear full for about 3 days around this time, from Tuesday evening through Friday morning.
Saturday night into Sunday morning, October 19 to 20: The Pleiades star cluster will appear near the waning gibbous Moon. At moonrise (7:42 p.m. EDT) on the east-northeastern horizon the Pleiades will be 3 degrees to the upper right. By the time the Moon reaches its highest for the night at 3:28 a.m., the Pleiades will be 7 degrees to the lower right.
Sunday night into Monday morning, October 20 to 21: The planet Jupiter will appear near the waning gibbous Moon. As Jupiter rises on the east-northeastern horizon at 9:08 p.m. EDT, it will be 6 degrees to the lower right of the Moon. As the Moon reaches its highest in the sky at 4:29 a.m., Jupiter will be 6 degrees below the Moon, and it will be to the lower left by the time morning twilight begins at 6:26 a.m.
As mentioned above, the Orionid meteor shower will peak the early morning of Monday, October 21. Conditions are not good as moonlight will interfere with seeing these meteors, but if you happen to be out keep an eye on the sky, as you might see a meteor or two.
For the Washington DC area and similar latitudes, Monday morning, October 21: This will be the last morning Comet C/2024 S1 (ATLAS), visible with binoculars or a telescope (estimated magnitude 11.2), will be above the horizon as morning twilight begins (at 6:27 AM EDT) as it rushes towards its close passage by the Sun a week later.
Monday evening, October 21: This will be the first evening the planet Mercury will be above the west-southwestern horizon 30 minutes after sunset (an estimate of when it will start being visible in the glow of dusk).
Tuesday night into Wednesday morning, October 22 to 23: The waning gibbous Moon, the bright star Pollux, and the planet Mars will form a triangle in the night sky. As Pollux rises on the northeastern horizon at 11 p.m. EDT, it will be 8 degrees to the lower left of the Moon. Mars will rise below the Moon 30 minutes later at 11:30 p.m. As the Moon reaches its highest for the night and morning twilight begins at 6:28 a.m., Pollux will be 4 degrees to the upper left and Mars will be 7 degrees to the lower left of the Moon.
Thursday morning, October 24: The waning Moon will appear half-full as it reaches its last quarter at 4:03 a.m. EDT.
If you find you are having trouble waking up in late October and early November, the dark mornings may be the reason (or at least a plausible excuse). Since 2007 when Congress moved the start of Daylight Saving Time from the end of October to the beginning of November, the latest sunrises of the year have been in late October and early November. In 2024, for the Washington, D.C. area and similar latitudes, the time of sunrise (in EDT) from Thursday, October 24 to Saturday, November 2 will be later than the latest sunrise of winter at 7:27 a.m. EST on January 5.
In the evening sky during this lunar cycle the bright planet Venus will be shifting to the upper left along the southwestern horizon in the opposite direction as the background of stars.
Friday, October 25: This will be when Venus and the bright star Antares will pass at their closest, with Antares 3 degrees to the lower left of Venus.
Saturday morning, October 26: The bright star Regulus will appear below the waning crescent Moon. As Regulus rises on the east-northeastern horizon at 2:15 a.m. EDT, it will be 5 degrees below the Moon. Morning twilight will begin more than 4 hours later at 6:31 a.m. with Regulus 4 degrees to the lower right of the Moon.
Monday morning, October 28: At about 7:39 a.m. EDT, Comet C/2024 S1 (ATLAS) will pass its closest to the Sun. If the sky is very clear, it might be bright enough to see in the daylight for an hour or so around closest approach. For the Washington, D.C. area, closest approach will only be 7 minutes after sunrise, so our only chance of seeing this is if the sky on the east-southeastern horizon is unusually clear. The comet will be to the lower left of the Sun, and since the tail points away from the Sun, it may be hidden by the horizon until the comet rises higher in the sky. Europe, Africa, and South America are better positioned to look for this comet near the Sun. Be careful and plan ahead, as it may be difficult to find a location that has both a clear view to the right part of the east-southeastern horizon and a large overhanging object to block the Sun while allowing you to see to the lower left of the Sun.
Pay attention to the news as the predictions may change, but the brightness predictions I have as of writing this are that this comet will be brighter than magnitude -5 until 8:06 a.m. (when the Sun will be 5.6 degrees above the horizon). Magnitude -4 is generally considered the brightness limit for visibility of an object during the day, and the comet is predicted to be above this magnitude until 8:39 AM, but because it will be close to the Sun it is hard to say what the actual visibility limit will be, as the glare near the Sun depends on atmospheric conditions and can be quite bright.
Tuesday, October 29: At 6:51 p.m. EDT, the Moon will be at apogee, its farthest from the Earth for this orbit.
Thursday morning, October 31: You might be able to see the thin, waxing crescent Moon low on the east-southeastern horizon 3.5 degrees to the lower left of the bright star Spica. You will need to look for them in the glow of dawn, as the Moon will rise at 6:43 a.m. EDT 7 minutes after twilight begins at 6:36 a.m.
Thursday, October 31, is Halloween: We currently divide the year into four seasons based upon the solstices and equinoxes, with winter beginning on the winter solstice in December. This approximates winter as the quarter of the year with the coldest temperatures. Much of pre-Christian northern Europe celebrated “cross-quarter days” halfway between the solstices and equinoxes, and divided the seasons on these days. Using this older definition, winter was the quarter of the year with the shortest daily periods of daylight, with autumn ending and winter beginning on Samhain, traditionally celebrated on October 31st or November 1st (the middle of our fall). Our Halloween customs are thought to have come from these earlier celebrations of fall’s end and winter’s start.
Friday morning, November 1, at 8:47 AM EDT: This will be the new Moon, when the Moon passes between the Earth and the Sun and will not be visible from the Earth. This new Moon is considered the darkest night of the Hindu lunisolar calendar. Diwali or Divali, also known as Dipawali or Deepavali, is an important five or six day festival of lights centered on this new Moon, celebrated by Hindus and other faiths including Jains, Sikhs, and Newar Buddhists. The name comes from the row (avali) of clay lamps (deepa) celebrants light to symbolize the inner light that protects from spiritual darkness. Lakshmi Puja or Kali Puja, venerating the goddess of prosperity, Lakshmi, is the central day of the festival (November 1 this year). It is a public holiday in many countries with large Hindu, Sikh, and/or Jain populations, including Fiji, Guyana, India, Malaysia, Mauritius, Myanmar, Nepal, Pakistan, Singapore, Sri Lanka, Suriname, and Trinidad and Tobago.
The day of or the day after the New Moon: This marks the start of the new month for most lunisolar calendars. The tenth month of the Chinese year of the Dragon starts on Friday, November 1. Sundown on Friday, November 1, marks the start of Marcheshvan in the Hebrew calendar, a name often shortened to Cheshvan or Heshvan.
If Comet C/2024 S1 (ATLAS) survives its close pass by the Sun, Saturday, November 2, will be the first morning it will be above the horizon as morning twilight begins at 6:38 a.m. EDT, appearing with an estimated magnitude of 10.5 (only visible with binoculars or a telescope).
Because of Daylight Saving Time, Saturday morning, November 2, will be the latest sunrise of the year. Morning twilight will begin at 6:38 a.m. EDT, sunrise will be at 7:37 a.m., solar noon will be at 12:51 p.m. when the Sun will reach its maximum altitude of 35.1 degrees, sunset will be at 6:06 p.m., and evening twilight will end at 7:05 p.m.
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 Saturday, November 2, will probably mark the beginning of Jumādā al-ʾŪlā.
Early on Sunday morning, November 3: We “Fall Back” from 1:59 a.m. EDT to 1 a.m. EST. While most of us will be gaining an hour of sleep, if you want to do something for 2 hours but are only supposed to do it for one, consider doing it for the “clock hour” from 1 a.m. EDT to 2 a.m. EST. Be careful though, as about twice as many accidents tend to happen during this “clock hour” compared to other mornings of the year! Regardless, on Sunday morning you will need to reset any clocks that didn’t reset themselves! On Sunday, twilight will begin at 5:39 a.m. EST, sunrise will be at 6:38 a.m., solar noon will be at 11:51 a.m. when the Sun will reach its maximum altitude of 35.8 degrees, sunset will be at 5:05 p.m., and evening twilight will end at 6:04 p.m.
It may be difficult to see, but on Sunday evening, November 3, the bright star Antares will appear 2 degrees above the thin, waxing crescent Moon. You will need to look for the Moon in the glow of dusk as it will set on the southwestern horizon just 1 minute after evening twilight ends (at 6:04 p.m. EST).
Monday evening, November 4: The bright planet Venus will appear 4 degrees to the upper right of the thin, waxing crescent Moon. The Moon will be 6 degrees above the southwestern horizon as evening twilight ends at 6:03 p.m. EST, and will set first 46 minutes later at 6:49 p.m.
Tuesday morning, November 5: Two minor meteor showers, the Southern Taurids (peaking at 7 meteors per hour on November 5) and the Northern Taurids (peaking at 5 meteors per hour on November 12), overlap to produce their highest combined rate. Although the light of the waxing crescent Moon will not interfere, even this combined rate will be low enough to make seeing these meteors from urban areas difficult due to light pollution. Still, if you are out after midnight and the sky is clear, you might see a meteor or two.
Early Saturday morning, November 9: The Moon will appear half-full as it reaches its first quarter at 12:56 a.m. EST.
In the evenings during much of this lunar cycle, the planet Mercury will be shifting to the upper left along the southwestern horizon, moving in the opposite direction from the background of stars. On Saturday and Sunday evenings, November 9 and 10, Mercury and the bright star Antares will pass their closest, less than 2 degrees apart, with Antares to the lower left of Mercury. You will need to look low on the southwestern horizon while dusk is in the sky, as they both will have set by the time evening twilight ends.
Saturday evening into early Sunday morning, November 9 to 10: The planet Saturn will appear near the waxing gibbous Moon. As evening twilight ends at 5:58 p.m. EST, Saturn will be 2 degrees to the upper left. The Moon will reach its highest point for the night about 1 hour 45 minutes later at 7:43 p.m., with Saturn 1 degree to the upper left. For the Washington, D.C. area, Saturn will be at its closest, about 0.1 degree to the upper right of the Moon, at about 9:55 p.m. (times and angles will differ for different locations). For the southern tip if Florida and parts of the Caribbean, Central America, and Northwestern South America, the Moon will block Saturn from view. The Moon will continue passing by Saturn, with Saturn setting first on the western horizon a little less than 3.5 hours later at 1:19 a.m.
Monday evening, November 11: This will be the first evening that the planet Mercury will be above the west-southwestern horizon as evening twilight ends at 5:57 p.m. EST.
Thursday morning, November 14: At 6:18 EST, the Moon will be at perigee, its closest to the Earth for this orbit.
The full Moon after next will be Friday afternoon, November 15, 2024 at 4:29 PM EST. This will be early Saturday morning from Kamchatka and Fiji Time eastwards to the International Date Line. This will be the last of four consecutive supermoons. The Pleiades star cluster will appear near the full Moon. The Moon will appear full for about three days around this time, from a few hours before sunrise Thursday morning into a few hours before sunrise Sunday morning.
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By European Space Agency
The day began with an 85% chance that bad weather would cause a launch delay: it ended with ESA’s Hera mission successfully in space and en route to the Didymos binary asteroid system.
At 16:52 CEST (14:52 UTC) on 7 October 2024, Hera took to the skies aboard a SpaceX Falcon 9 rocket from Cape Canaveral Space Force Station in Florida, USA. After a smooth 76-minute ascent, the spacecraft separated from its launcher, and, a few minutes later, ESA’s ESOC mission operations centre in Germany assumed control of the spacecraft.
Here is what has happened since then.
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By NASA
The 13th flight of the space shuttle program and the sixth of Challenger, STS-41G holds many distinctions. As the first mission focused almost entirely on studying the Earth, it deployed a satellite, employed multiple instruments, cameras, and crew observations to accomplish those goals. The STS-41G crew set several firsts, most notably as the first seven-member space crew. Other milestones included the first astronaut to make a fourth shuttle flight, the first and only astronaut to fly on Challenger three times and on back-to-back missions on any orbiter, the first crew to include two women, the first American woman to make two spaceflights, the first American woman to conduct a spacewalk, and the first Canadian and the first Australian-born American to make spaceflights.
Left: The STS-41G crew patch. Right: The STS-41G crew of Jon A. McBride, front row left, Sally K. Ride, Kathryn D. Sullivan, and David C. Leestma; Paul D. Scully-Power, back row left, Robert L. Crippen, and Marc Garneau of Canada.
In November 1983, NASA named the five-person crew for STS-41G, formerly known as STS-17, then planned as a 10-day mission aboard Columbia in August 1984. When assigned to STS-41G, Commander Robert L. Crippen had already completed two missions, STS-1 and STS-7, and planned to command STS-41C in April 1984. On STS-41G, he made a record-setting fourth flight on a space shuttle, and as it turned out the first and only person to fly aboard Challenger three times, including back-to-back missions. Pilot Jon A. McBride, and mission specialists Kathryn D. Sullivan from the Class of 1978 and, David C. Leestma from the Class of 1980, made their first flights into space. Mission specialist Sally K. Ride made her second flight, and holds the distinction as the first American woman to return to space, having flown with Crippen on STS-7. The flight marked the first time that two women, Ride and Sullivan, flew in space at the same time. In addition, Sullivan holds the honor as the first American woman to conduct a spacewalk and made her second flight and holds the distinction as the first American woman to return to space, having flown with Crippen on STS-7. The flight marked the first time that two women, Ride and Sullivan, flew in space at the same time. In addition, Sullivan holds the honor as the first American woman to conduct a spacewalk, and Leestma as the first of the astronaut Class of 1980 to make a spaceflight.
Columbia’s refurbishment following STS-9 ran behind schedule and could not meet the August launch date, so NASA switched STS-41G to the roomier and lighter weight Challenger. This enabled adding crew members to the flight. In February 1984, NASA and the Canadian government agreed to fly a Canadian on an upcoming mission in recognition for that country’s major contribution to the shuttle program, the Remote Manipulator System (RMS), or robotic arm. In March, Canada named Marc Garneau as the prime crewmember with Robert B. Thirsk as his backup. NASA first assigned Garneau to STS-51A, but with the switch to Challenger transferred him to the STS-41G crew. On June 1, NASA added Australian-born and naturalized U.S. citizen Paul D. Scully-Power, an oceanographer with the Naval Research Laboratory who had trained shuttle crews in recognizing ocean phenomena from space, to the mission rounding out the seven-person crew, the largest flown to that time. Scully-Power has the distinction as the first person to launch into space sporting a beard.
Left: Space shuttle Challenger returns to NASA’s Kennedy Space Center (KSC) in Florida atop a Shuttle Carrier Aircraft following the STS-41C mission. Middle: The Earth Resources Budget Satellite during processing at KSC for STS-41G. Right: Technicians at KSC process the Shuttle Imaging Radar-B for the STS-41G mission.
The STS 41G mission carried a suite of instruments to study the Earth. The Earth Radiation Budget Satellite (ERBS), managed by NASA’s Goddard Space Flight Center in Greenbelt, Maryland, contained three instruments, including the Stratospheric Aerosol and Gas Experiment-2 (SAGE-2), to measure solar and thermal radiation of the Earth to better understand global climate changes. NASA’s Office of Space and Terrestrial Applications sponsored a cargo bay-mounted payload (OSTA-3) consisting of four instruments. The Shuttle Imaging Radar-B (SIR-B), managed by NASA’s Jet Propulsion Laboratory in Pasadena, California, and an updated version of SIR-A flown on STS-2, used synthetic aperture radar to support investigations in diverse disciplines such as archaeology, geology, cartography, oceanography, and vegetation studies. Making its first flight into space, the 900-pound Large Format Camera (LFC) took images of selected Earth targets on 9-by-18-inch film with 70-foot resolution. The Measurement of Air Pollution from Satellites (MAPS) experiment provided information about industrial pollutants in the atmosphere. The Feature Identification and Location Experiment (FILE) contained two television cameras to improve the efficiency of future remote sensing equipment. In an orbit inclined 57 degrees to the Equator, the instruments aboard Challenger could observe more than 75% of the Earth’s surface.
The Orbital Refueling System (ORS), managed by NASA’s Johnson Space Center in Houston, while not directly an Earth observation payload, assessed the feasibility of on-orbit refueling of the Landsat-4 remote sensing satellite, then under consideration as a mission in 1987, as well as Department of Defense satellites not designed for on-orbit refueling. In the demonstration, the astronauts remotely controlled the transfer of hydrazine, a highly toxic fuel, between two tanks mounted in the payload bay. During a spacewalk, two crew members simulated connecting the refueling system to a satellite and later tested the connection with another remotely controlled fuel transfer. Rounding out the payload activities, the large format IMAX camera made its third trip into space, with footage used to produce the film “The Dream is Alive.”
Four views of the rollout of space shuttle Challenger for STS-41G. Left: From inside the Vehicle Assembly Building (VAB). Middle left: From Firing Room 2 of the Launch Control Center (LCC). Middle right: From the crawlerway, with the LCC and the VAB in the background. Right: From atop the VAB.
Left: The STS-41G astronauts answer reporters’ questions at Launch Pad 39A during the Terminal Countdown Demonstration Test. Right: The STS-41G crew leaves crew quarters and prepares to board the Astrovan for the ride to Launch Pad 39A for liftoff.
Following the STS-41C mission, Challenger returned to KSC from Edwards Air Force Base in California on April 18. Workers in KSC’s Orbiter Processing Facility refurbished the orbiter and changed out its payloads. Rollover to the Vehicle Assembly Building (VAB) took place on Sept. 8 and after workers stacked Challenger with its External Tank and Solid Rocket Boosters, they rolled it out of the VAB to Launch Pad 39A on Sept. 13. Just two days later, engineers completed the Terminal Countdown Demonstration Test, a final dress rehearsal before the actual countdown and launch, with the astronaut crew participating as on launch day. They returned to KSC on Oct. 2 to prepare for the launch three days later.
Left: Liftoff of space shuttle Challenger on the STS-41G mission. Middle: Distant view of Challenger as it rises through the predawn skies. Right: The Earth Resources Budget Satellite just before the Remote Manipulator System released it.
Space shuttle Challenger roared off Launch Pad 39A at 7:03 a.m. EDT, 15 minutes before sunrise, on Oct. 5, 1984, to begin the STS-41G mission. The launch took place just 30 days after the landing of the previous mission, STS-41D. That record-breaking turnaround time between shuttle flights did not last long, as the launch of Discovery on STS-51A just 26 days after Challenger’s landing set a new record on Nov. 8.
Eight and a half minutes after liftoff, Challenger and its seven-member crew reached space and shortly thereafter settled into a 218-mile-high orbit, ideal for the deployment of the 5,087-pound ERBS. The crew noted that a 40-inch strip of Flexible Reusable Surface Insulation (FRSI) had come loose from Challenger’s right-hand Orbiter Maneuvering System (OMS) pod, presumably lost during launch. Mission Control determined that this would not have any impact during reentry. Ride grappled the ERBS with the shuttle’s RMS but when she commanded the satellite to deploy its solar arrays, nothing happened. Mission Control surmised that the hinges on the arrays had frozen, and after Ride oriented the satellite into direct sunlight and shook it slightly on the end of the arm, the panels deployed. She released ERBS about two and a half hours late and McBride fired Challenger’s steering jets to pull away from the satellite. Its onboard thrusters boosted ERBS into its operational 380-mile-high orbit. With an expected two-year lifetime, it actually operated until October 14, 2005, returning data about how the Earth’s atmosphere absorbs and re-radiates the Sun’s energy, contributing significant information about global climate change.
Left: The SIR-B panel opens in Challenger’s payload bay. Right: Jon A. McBride with the IMAX large format camera in the middeck.
Near the end of their first day in space, the astronauts opened the panels of the SIR-B antenna and activated it, also deploying the Ku-band antenna that Challenger used to communicate with the Tracking and Data Relay System (TDRS) satellite. The SIR-B required a working Ku-band antenna to downlink the large volume of data it collected, although it could store a limited amount on onboard tape recorders. But after about two minutes, the data stream to the ground stopped. One of the two motors that steered the Ku antenna failed and it could no longer point to the TDRS satellite. Mission Control devised a workaround to fix the Ku antenna in one position and steer the orbiter to point it to the TDRS satellite and downlink the stored data to the ground. Challenger carried sufficient fuel for all the maneuvering, but the extra time for the attitude changes resulted in achieving only about 40% of the planned data takes. The discovery of the 3,000-year-old lost city of Udar in the desert of Oman resulted from SIR-B data, one of many interesting findings from the mission.
Left: The shuttle’s Canadian-built Remote Manipulator System or robotic arm closes the SIR-B panel. Middle: The patch for Canadian astronaut Marc Garneau’s mission. Right: Spiral eddies in the eastern Mediterranean Sea.
During the second mission day, the astronauts lowered Challenger’s orbit to an intermediate altitude of 151 miles. Flight rules required that the SIR-B antenna be stowed for such maneuvers but the latches to clamp the antenna closed failed to activate. Ride used the RMS to nudge the antenna panel closed. From the orbiter’s flight deck, Leestma successfully completed the first ORS remote-controlled hydrazine fuel transfer. Garneau began working on his ten CANEX investigations related to medical, atmospheric, climatic, materials and robotic sciences while Scully-Power initiated his oceanographic observations. Despite greater than expected global cloud cover, he successfully photographed spiral eddies in the world’s oceans, particularly notable in the eastern Mediterranean Sea.
Left: Mission Specialists Kathryn D. Sullivan, left, and Sally K. Ride on Challenger’s flight deck. Right: Payload Specialists Marc Garneau and Paul D. Scully-Power working on a Canadian experiment in Challenger’s middeck.
The third day saw the crew lower Challenger’s orbit to 140 miles, the optimal altitude for SIR-B and the other Earth observing instruments. For the next few days, all the experiments continued recording their data, including Garneau’s CANEX and Scully-Power’s oceanography studies. Leestma completed several scheduled ORS fuel transfers prior to the spacewalk. Preparations for that activity began on flight day 6 with the crew lowering the cabin pressure inside Challenger from the normal sea level 14.7 pounds per square inch (psi) to 10.2 psi. The lower pressure prevented the buildup of nitrogen bubbles in the bloodstreams of the two spacewalkers, Leestma and Sullivan, that could result in the development of the bends. The two verified the readiness of their spacesuits.
Left: David C. Leestma, left with red stripes on his suit, and Kathryn D. Sullivan during their spacewalk. Middle: Leestma, left, and Sullivan working on the Orbital Refueling System during the spacewalk. Right: Sullivan, left, and Leestma peer into Challenger’s flight deck during the spacewalk.
On flight day 7, Leestma and Sullivan, assisted by McBride, donned their spacesuits and began their spacewalk. After gathering their tools, the two translated down to the rear of the cargo bay to the ORS station. With Sullivan documenting and assisting with the activity, Leestma installed the valve assembly into the simulated Landsat propulsion plumbing. After completing the ORS objectives, Leestma and Sullivan proceeded back toward the airlock, stopping first at the Ku antenna where Sullivan secured it in place. They returned inside after a spacewalk that lasted 3 hours and 29 minutes, and the crew brought Challenger’s cabin pressure back up to 14.7 psi.
STS-41G crew Earth observation photographs. Left: Hurricane Josephine in the Atlantic Ocean. Middle: The Strait of Gibraltar. Right: Karachi, Pakistan, and the mouth of the Indus River.
False color image of Montreal generated from SIR-B data.
Left: Traditional inflight photo of the STS-41G crew on Challenger’s flight deck. Right: Robert L. Crippen with the orange glow generated outside Challenger during reentry.
Left: Kathryn D. Sullivan photograph of NASA’s Kennedy Space Center (KSC) in Florida during Challenger’s approach, minutes before touchdown. Middle: Space shuttle Challenger moments before touchdown at N KSC at the end of the STS-41G mission. Right: The crew of STS-41G descends from Challenger after completing a highly successful mission.
During their final full day in space, Challenger’s crew tidied the cabin for reentry and completed the final SIR-B and other Earth observations. On Oct. 13, the astronauts closed the payload bay doors and fired the OMS engines over Australia to begin the descent back to Earth. Because of the mission’s 57-degree inclination, the reentry path took Challenger and its crew over the eastern United States, another Shuttle first. Crippen guided the orbiter to a smooth landing at KSC, completing a flight of 8 days, 5 hours, and 24 minutes, the longest mission of Challenger’s short career. The crew had traveled nearly 3.3 million miles and completed 133 orbits around the Earth.
Left: Missing insulation from Challenger’s right hand Orbiter Maneuvering System pod as seen after landing. Middle: Missing tile from the underside of Challenger’s left wing. Right: Damage to tiles on Challenger’s left wing.
As noted above, on the mission’s first day in space the crew described a missing strip of FRSI from the right-hand OMS pod. Engineers noted additional damage to Challenger’s Thermal Protection System (TPS) after the landing, including several tiles on the underside the vehicle’s left wing damaged and one tile missing entirely, presumably lost during reentry. Engineers determined that the water proofing used throughout the TPS that allowed debonding of the tiles as the culprit for the missing tile. To correct the problem, workers removed and replaced over 4,000 tiles, adding a new water proofing agent to preclude the recurrence of the problem on future missions.
Read recollections of the STS-41G mission by Crippen, McBride, Sullivan, Ride, and Leestma in their oral histories with the JSC History Office. Enjoy the crew’s narration of a video about the STS-41G mission.
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By Space Force
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