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By NASA
4 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater)
As students head back to school, teachers have a new tool that brings NASA satellite data down to their earthly classrooms.
The My NASA Data homepage categorizes content by areas of study called spheres and also Earth as a system. NASA/mynasadata.larc.nasa.gov For over 50 years of observing Earth, NASA’s satellites have collected petabytes of global science data (that’s millions and millions of gigabytes) – with terabytes more coming in by the day. Since 2004, the My NASA Data website has been developing ways for students and teachers of grades 3-12 to understand, and visualize NASA data, and to help incorporate those measurements into practical science lessons.
“We have three different types of lesson plans, some of which are student-facing and some are teacher-facing,” said Angie Rizzi, My NASA Data task lead, based at NASA’s Langley Research Center in Hampton, Virginia. “Teachers can download complete lesson plans or display a wide variety of Earth data. There are also lessons written for students to interact with directly.”
An image from My NASA Data’s Earth System Data Explorer visualization tool showing the monthly leaf index around the world as measured by NASA satellites in August 2020. Data parameters for this visualization were set to biosphere under the sphere dropdown and vegetation as a category. NASA/mynasadata.larc.nasa.gov A key component of the My NASA Data site is the newly updated Earth System Data Explorer visualization tool, which allows users to access and download NASA Earth data. Educators can explore the data then create custom data tables, graphs, and plots to help students visualize the data. Students can create and investigate comparisons between land surface temperatures, cloud cover, extreme heat, and a wide range of other characteristics for a specific location or region around the globe.
An image from My NASA Data’s visualization tool showing various searchable categories under the atmosphere dataset selection. NASA/mynasadata.larc.nasa.gov “The Earth System Data Explorer tool has a collection of science datasets organized by different spheres of the Earth system,” explained Desiray Wilson, My NASA Data scientific programmer. The program highlights six areas of study: atmosphere, biosphere, cryosphere, geosphere, hydrosphere, and Earth as a system. “The data goes as far back as the 1980s, and we are getting more daily datasets. It’s really good for looking at historical trends, regional trends, and patterns.”
My NASA Data had over one million site visits last year, with some of the most popular searches focusing on temperatures, precipitation, water vapor, and air quality.
My NASA Data program leaders and instructors collaborating with educators from the North Carolina Space Grant at NASA’S Langley Research Center June 26, 2024. Teachers were at NASA Langley as part of the North Carolina Space Education Ambassadors (NCSEA) program and were given demonstrations of the My NASA Data website. NASA/David C. Bowman Natalie Macke has been teaching for 20 years and is a science teacher at Pascack Hills High School in Montvale, New Jersey. Teachers like Macke help shape the lessons on the site through internships with the My NASA Data team. Teachers’ suggestions were also incorporated to enhance the visualization tool by adding new features that now allow users to swipe between visual layers of data and make side-by-side comparisons. Users can also now click on a location to display latitude and longitude and variable data streamlining the previous site which required manual input of latitude and longitude.
“The new visualization tool is very much a point-and-click layout like our students are used to in terms of just quickly selecting data they want to see,” said Macke. “Instantaneously, a map of the Earth comes up, or just the outline, and they can get the satellite view. So if they’re looking for a specific city, they can find the city on the map and quickly grab a dataset or multiple datasets and overlay it on the map to make visual comparisons.”
Map of the East Coast of the United States from the My NASA Data visualization tool from August 2023 before adding layers of atmospheric satellite data. The image below shows the same map layered with atmospheric measurements.NASA/mynasadata.larc.nasa.gov The East Coast of the United States shown with monthly daytime surface (skin) temperatures from August 2023 overlayed from Earth-observing satellite data using the My NASA Data Earth System Data Explorer visualization tool. The image above shows the same region without the data layer added.NASA/mynasadata.larc.nasa.gov/ Even more valuable than creating visualizations for one specific lesson, elaborated Macke, is the opportunity My NASA Data provides for students to understand the importance of interpreting, verifying, and using datasets in their daily lives. This skill, she said, is invaluable, because it helps spread data literacy enabling users to look at data with a discriminating eye and learn to discern between assumptions and valid conclusions.
“Students can relate the data map to literally what’s happening outside their window, showing them how NASA Earth system satellite data relates to real life,” said Macke. “Creating a data literate public – meaning they understand the context and framework of the data they are working with and realizing the connection between the data and the real world – hopefully will intrigue them to continue to explore and learn about the Earth and start asking questions. That’s what got me into science when I was a little kid.”
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Charles G. Hatfield
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3 min read NASA Mobilizes Resource for HBCU Scholars, Highlighted at Conference
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By NASA
A NASA MITTIC participant during the competition’s on-site experience and Space Tank at NASA’s Johnson Space Center in Houston on Dec. 7, 2022. (Credit: Riley McClenaghan) NASA will spotlight its program to engage underrepresented and underserved students in science, technology, engineering, and math at the 2024 National Historically Black Colleges and Universities (HBCU) Week Conference in Philadelphia, from Sunday, Sept. 15, to Thursday, Sept. 19.
As part of the White House’s initiative to advance educational equity and economic opportunities through HBCUs, NASA’s Minority University Research and Education Project (MUREP) provides HBCU scholars access to NASA technology, networks, training, resources, and partners. During the conference, NASA will host a MUREP Innovation and Tech Transfer Idea Competition (MITTIC), featuring a hackathon challenging students to develop creative and innovative solutions for the benefit of humanity.
“NASA’s MUREP is delighted to continue our collaboration with the White House initiative on HBCU’s to elevate students’ learning experience,” said Keya Briscoe, manager, MUREP, NASA Headquarters in Washington. “We are enthusiastic about the fresh insights and innovative solutions that the scholars will develop at the MITTIC hackathon, which provides an opportunity to showcase the depth and breadth of their academic and professional excellence.”
The MITTIC HBCU hackathon concentrates on using NASA technologies to address various challenges common to HBCU campuses. The scholars will be divided into teams which will utilize NASA technology to address the challenge they select. Each team will pitch their concepts to a panel of subject matter experts.
The winning team will receive a cash prize provided by MITTIC’s partner, JP Morgan Chase (JPMC), in collaboration with the JPMC Chief Technology Office, Career and Skills Development Office, and Advancing Black Pathways Group. The remaining HBCU hackathon teams will be able to submit their proposals to the fall or spring MITTIC Space2Pitch Competitions taking place at NASA’s Johnson Space Center in Houston.
To further NASA’s initiative of promoting engagement and inclusion, the scholars will have the opportunity to interact with NASA exhibits to learn more about different career paths with NASA. In addition, a viewing of the Color of Space will show, highlighting the life stories of seven current and former Black astronauts.
Through the HBCU Scholar Recognition Program, the White House Initiative annually recognizes students from HBCUs for their accomplishments in academics, leadership, and civic engagement. Over the course of an academic school year, HBCU scholars participate in professional development through monthly classes and have access to a network of public and private partners.
“NASA’s unwavering commitment to provide our nation’s HBCUs with opportunity to participate in the space enterprise is invaluable to our institutions and our nation,” said Dietra Trent, executive director of the White House Initiative on HBCUs. “The initiative proudly solutes NASA for their relentless support and we look forward to having them again as a valued partner for the 2024 HBCU Week Conference and HBCU Scholar Recognition Program. By fostering innovation and expanding opportunities in STEM, NASA is empowering the next generation of diverse leaders to reach for the stars and beyond.”
Through their relationships with NASA, community-based organizations, and other public and private partners, HBCU scholars have the opportunity to strive for their education and career potentials.
To learn more about NASA and agency programs, visit:
https://www.nasa.gov
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By NASA
Manuel Retana arrived in the U.S. at 15 years old, unable to speak English and with nothing but a dream and $200 in his pocket. Now, he plays a crucial role implementing life support systems on spacecraft that will carry humans to the Moon and, eventually, Mars—paving the way for the next frontier of space exploration.
A project manager for NASA’s Johnson Space Center Life Support Systems Branch in Houston, Retana helps to ensure astronaut safety aboard the International Space Station and for future Artemis missions. His work involves tracking on-orbit technical issues, managing the cost and schedule impacts of flight projects, and delivering emergency hardware.
Manuel Retana stands in front of NASA’s Space Launch System rocket at Kennedy Space Center in Florida. One of his most notable achievements came during the qualification of the Orion Smoke Eater Filter for the Artemis II and III missions. The filter is designed to remove harmful gases and particulates from the crew cabin in the event of a fire inside the spacecraft. Retana was tasked with creating a cost-effective test rig – a critical step for making the filter safe for flight.
Retana’s philosophy is simple: “Rockets do not build themselves. People build rockets, and your ability to work with people will define how well your rocket is built.”
Throughout his career, Retana has honed his soft skills—communication, leadership, collaboration, and conflict resolution—to foster an environment of success.
Retana encourages his colleagues to learn new languages and share their unique perspectives. He even founded NASA’s first Mariachi ensemble, allowing him to share his cultural heritage in the workplace.
He believes diversity of thought is a key element in solving complex challenges as well as creating an environment where everyone feels comfortable sharing their perspectives.
“You need to be humble and have a willingness to always be learning,” he said. “What makes a strong team is the fact that not everyone thinks the same way.”
Manuel Retana, center, performs with the Mariachi Ensemble group at NASA’s Johnson Space Center in Houston. For the future of space exploration, Retana is excited about the democratization of space, envisioning a world where every country has the opportunity to explore. He is eager to see humanity reach the Moon, Mars, and beyond, driven by the quest to answer the universe’s most enigmatic questions.
To the Artemis Generation, he says, “Never lose hope, and it is never too late to start following your dreams, no matter how far you are.”
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By NASA
Credit: NASA NASA has awarded the NASA Academic Mission Services 2 (NAMS-2) contract to Crown Consulting Inc., of Arlington, Virginia, to provide the agency’s Ames Research Center in California’s Silicon Valley, aeronautics and exploration technology research and development support.
NAMS-2 is a single award hybrid cost-plus-fixed-fee indefinite-delivery indefinite-quantity contract with a maximum potential value of $121 million. The contract begins Tuesday, Oct. 1, 2024, with a 60-day phase-in period, followed by a two-year base period, and options to extend performance through November 2029.
Under this contract, the company will support a broad scope of scientific research and development of new and emerging capabilities and technologies associated with air traffic management, advanced technology, nanoelectronics, and prototype software in support of the Aeronautics Directorate and the Exploration Technology Directorate at NASA Ames. The work also will focus on the improvement of aircraft and airspace safety, as well as the transition of advanced aeronautics technologies into future air vehicles.
For information about NASA and agency programs, visit:
https://www.nasa.gov
-end-
Roxana Bardan
Headquarters, Washington
202-358-1600
roxana.bardan@nasa.gov
Rachel Hoover
Ames Research Center, Silicon Valley, Calif.
rachel.hoover@nasa.gov
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By NASA
Skywatching Skywatching Home Eclipses What’s Up Explore the Night Sky Night Sky Network More Tips and Guides FAQ 23 Min Read The Next Full Moon is a Partial Lunar Eclipse; a Supermoon; the Corn Moon; and the Harvest Moon
The Next Full Moon is a Partial Lunar Eclipse; a SuperMoon; the Corn Moon; the Harvest Moon; the Fruit or Barley Moon; the end of Ganesh Chaturthi and the start of Pitru Paksha; Madhu Purnima; the Mid-Autumn, Mooncake, or Reunion Festival Moon; Chuseok; and Imomeigetsu or the Potato Harvest Moon.
The full Moon will be Tuesday night, September 17, 2024, at 10:35 PM EDT. This will be on Wednesday from Newfoundland and Greenland Time eastward across Eurasia, Africa, and Australia to the International Date Line. Most commercial calendars will show this full Moon on Wednesday based on Greenwich or Universal Time. The Moon will appear full for about three days, from Monday evening through Thursday morning.
This will be a partial lunar eclipse. The Moon will start entering the Earth’s partial shadow at 8:41 PM EDT. The slight dimming of the Moon will be difficult to notice until the top edge of the Moon starts entering the full shadow at 10:13 PM. The peak of the eclipse will be at 10:44 PM with only the top 8 percent of the Moon in full shadow. The Moon will finish exiting the full shadow at 11:16 PM and the partial shadow on Wednesday morning at 12:47 AM.
The phases of the Moon for September 2024. NASA/JPL-Caltech This will be a supermoon. The term “supermoon” was coined by astrologer Richard Nolle in 1979 as either a new or full Moon that occurs when the Moon is within 90% of its closest to Earth. Since we can’t see new Moons, what has the public’s attention are full supermoons, the biggest and brightest Moons of the year. Although different publications use different thresholds for deciding which full Moons qualify, most agree this will be the second of four consecutive supermoons (effectively tied with the full Moon in October for the closest of the year).
The Maine Farmer’s Almanac first published “Indian” names for the full Moons in the 1930s and these names have become widely known and used. According to this almanac, as the full Moon in September the Algonquin tribes in what is now the northeastern USA called this the Corn Moon, as this was the time for gathering their main staple crops of corn, pumpkins, squash, beans, and wild rice.
As the full Moon closest to the autumnal equinox, this is the Harvest Moon. The first known written use of this name in the English language (per the Oxford English Dictionary) was in 1706. During the fall harvest season farmers sometimes need to work late into the night by moonlight. On average moonrise is about 50 minutes later each night. Around the Harvest Moon this time is shorter, about 25 minutes for the latitude of Washington, DC, and only 10 to 20 minutes farther north in Canada and Europe.
Other European names for this full Moon are the Fruit Moon, as a number of fruits ripen as the end of summer approaches, and the Barley Moon, from the harvesting and threshing of barley.
For Hindus, this full Moon marks the end of Ganesh Chaturthi and the start of Pitru Paksha. Ganesh Chaturthi (also called Vinayaka Chaturthi or Vinayaka Chavithi) is a 10 or 11 day festival honoring the god Ganesha that ends with this full Moon. Ganesha is easily recognized by his elephant head and is worshiped as the god of beginnings, wisdom, arts and sciences, and as the remover of obstacles. Throughout the festival celebrants offer food, sweets, and prayers to clay statues of Ganesha at home and on public stages. Traditions include chanting of Vedic hymns and Hindu texts, prayers, and fasting. On the last day (near the full Moon), people carry the statues to a nearby river or ocean and immerse them. As the clay dissolves, Ganesha is believed to return to his parents, the god Shiva and goddess Parvati, on Mount Kailash.
Pitru Paksha (fortnight of the ancestors) is a 15 days long festival that ends with the new Moon. During this time, Hindus honor their ancestors (pitrs) with rituals, food offerings, and scripture reading. Pitru Paksha is also known by a number of other names.
For some Buddhists in Bangladesh and Thailand this full Moon is Madhu Purnima, the Honey Full Moon Festival or the Honey-offering Festival. The legend is that when the Buddha was trying to bring peace between two factions in a forest, an elephant and a monkey fed him, with the elephant offering fruit and the monkey offering a honeycomb.
In China, Vietnam, and some other Asian countries, this full Moon corresponds with the Mid-Autumn Festival, a traditional harvest festival. In China, other names for this festival include the Moon Festival, the Mooncake Festival, and the Reunion Festival (with wives visiting their parents then returning to celebrate with their husbands and his parents). Part of the festival includes offerings to the Moon Goddess Chang’e (the name the China National Space Agency gives their lunar missions).
In Korea, this full Moon corresponds with the harvest festival Chuseok, during which Koreans return to their traditional hometowns to pay respect to the spirits of their ancestors.
This full Moon corresponds with the first of two Japanese Tsukimi or “Moon-Viewing” festivals, also called Imomeigetsu (which translates as “potato harvest Moon”) because of the tradition of offering sweet potatoes to the Moon. These festivities have become so popular that they are often extended for several days after the full Moon.
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 eighth month of the Chinese year of the Dragon and Rabi’ al-Awwal in the Islamic calendar, the month in which many Muslims celebrate Mawlid, the birth of the Prophet Muhammad. This full Moon is near the middle of Elul in the Hebrew calendar. Elul is a time of preparation for the High Holy Days of Rosh Hashanah and Yom Kippur. Customs include granting and asking others for forgiveness as well as beginning or ending all letters with the wish that the recipient will have a good year.
As usual, the wearing of suitably celebratory celestial attire is encouraged in honor of the full Moon. Go out and observe the Moon, enjoy this harvest season (including corn, fruit, and sweet potatoes, and honey), remember your ancestors, stay in touch with your parents, and forgive and ask forgiveness. Here’s wishing you a good year!
Comet C/2023 A3 (Tsuchinshan-ATLAS)
Pay attention to the news about Comet C/2023 A3 (Tsuchinshan-ATLAS)! There are a number of “ifs” so we don’t like to raise expectations. Similar visitors from the Oort Cloud have broken apart and fizzled out as they passed close to the Sun. If this comet survives its passage by the Sun (closest approach on September 27, 2024) and if the amount of gas and dust it gives off does not decrease significantly, this might be one of the best comets in a long time. If it strongly scatters sunlight towards the Earth it might even be visible in the glow of dusk just after its closest approach to Earth on October 12.
From the Washington, DC area and similar latitudes, this comet will be above the horizon before morning twilight begins from September 22 through October 4, with the current brightness curve predicting a steady increase in brightness from about visual magnitude 4 to near 3 (the smaller the number, the brighter the object). As it brightens it may be visible under dark sky conditions and even more impressive through binoculars or a telescope, although towards the start and end of this period it may be too low on the horizon to see when the sky is completely dark.
Between about October 4 and October 11 the Sun’s glare will mask visibility from the Northern Hemisphere. Check your local news or web sites for viewing information for your latitude. For example, Sky and Telescope reports that Southern Hemisphere skywatchers should fare better.
Comet C/2023 A3 (Tsuchinshan-ATLAS) will be at its closest to Earth on October 12 at 11:10 AM EDT. Around closest approach the comet’s brightness is predicted to peak at about visual magnitude 3 (similar to many stars). Forward scattering might increase the brightness significantly, possibly as high as -1 (brighter than every star except Sirius). How bright the comet actually appears will depend upon how much gas and dust it is giving off, which can change quickly. Also, brightness comparisons between comets and stars can be misleading as the light of the comet is spread out making it less distinct than a star with the same brightness.
The best time to look should be the evenings on and shortly after October 12 with the comet above the western horizon after sunset. The evening of October 12 the comet will be 4 degrees above the western horizon as evening twilight ends, similar in altitude and to the right of Venus. The comet is expected to dim as it moves away from the Earth, but will appear higher in a darker sky and set later each evening, which could make it easier to see. 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. The brightness will decrease to about magnitude 6 by the end of October.
Meteor Showers
During this lunar cycle four minor meteors showers are predicted to peak at 5 or fewer visible meteors per hour (under ideal viewing conditions), making them basically not visible from our light-polluted urban areas.
Evening Sky Highlights
On the evening of Tuesday, September 17 (the evening of the full Moon), as twilight ends (at 8:10 PM EDT), the rising Moon will be 11 degrees above the east-southeastern horizon with Saturn to the upper right at 14 degrees above the horizon. Later in the evening the partial shadow of the Earth will cover a small upper part of the Moon. Bright Venus will be 2 degrees above the west-southwestern horizon with the star Spica on the horizon to the lower left. The bright star closest to overhead will be Vega, the brightest star in the constellation Lyra the lyre, at 87 degrees above the western horizon. Vega is part of the Summer Triangle along with Deneb and Altair. It is the 5th brightest star in our night sky, about 25 light-years from Earth, has twice the mass of our Sun, and shines 40 times brighter than our Sun.
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 west-southwestern horizon, appearing slightly higher each evening. The waxing Moon will pass by Venus on October 5, Antares on October 7, and Saturn on October 14. Comet C/2023 A3 (Tsuchinshan-ATLAS) will be at its closest to Earth on October 12 at 11:10 AM. Assuming it survives its pass by the Sun on September 27 and depending upon how much gas and dust it gives off, it could be a good show in the evenings on and after October 12. See the comet summary above and keep an eye on the news for updates on this comet.
By the evening of Thursday, October 17 (the evening of the full Moon after next), as twilight ends (at 7:24 PM 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 22 degrees above the western horizon. The bright star closest to overhead will be Deneb at 80 degrees above the northeastern horizon. Deneb 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.
Morning Sky Highlights
On the morning of Wednesday, September 18 (the morning of the night of the full Moon), as twilight begins (at 5:55 AM EDT), the setting full Moon will be 15 degrees above the west-southwestern horizon. The brightest planet in the sky will be Jupiter at 71 degrees above the south-south eastern horizon. Near Jupiter will be Mars at 61 degrees above the east-southeastern horizon. Saturn will be below the Moon at 1 degree above the western horizon. The bright star appearing closest to overhead will be Capella, the brightest star in the constellation Auriga the charioteer, at 80 degrees above the northeastern horizon. Although we see Capella as a single star (the 6th brightest in our night sky), it is actually four stars (two pairs of stars orbiting each other). Capella is about 43 lightyears from us.
As this lunar cycle progresses, Jupiter, Mars, Saturn, and the background of stars will appear to shift westward each evening. After September 19 Saturn set before morning twilight begins. The waning Moon will pass by the Pleiades star cluster on September 22, Mars on September 25, Pollux on September 26, and Regulus on September 29. Comet C/2023 A3 (Tsuchinshan-ATLAS) will be above the horizon before morning twilight begins from September 22 through October 4. Comets are notoriously difficult to predict, but if the amount of gas and dust it gives off remains constant it should increase in brightness each morning. See the comet summary above and keep an eye on the news for updates on this comet.
By the morning of Thursday, October 17 (the morning of the full Moon after next), as twilight begins (at 6:22 AM EDT), the setting full 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. 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.
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, DC, and some of these details may differ for where you are (I use parentheses to indicate times specific to the DC 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 night, September 14, is International Observe the Moon Night! See https://moon.nasa.gov/observe-the-moon-night/about/overview/ for more information.
Our 24 hour clock is based on the average length of the solar day. Solar noon on Sunday, September 15 to solar noon on Monday, September 16, will be the shortest solar day of the year, 23 hours, 59 minutes, and 38.6 seconds long.
Monday night into Tuesday morning, September 16 to 17, Saturn will appear near the full Moon. As evening twilight ends (at 8:12 PM EDT) Saturn will be 6 degrees to the left of the Moon. When the Moon reaches its highest for the night (at 12:17 AM) Saturn will be 4 degrees to the upper left. By the time morning twilight begins (at 5:54 AM) the Moon will be 1 degree above the west-southwestern horizon with Saturn 1 degree above the Moon. For parts of western North America and across the Pacific Ocean towards Australia the Moon will pass in front of Saturn. See http://lunar-occultations.com/iota/planets/0917saturn.htm for a map and information on the areas that will see this occultation.
Tuesday morning, September 17, will be the last morning that Mercury will be above the horizon as morning twilight begins (at 5:54 AM EDT).
As mentioned above, the full Moon will be Tuesday night, September 17, at 10:35 PM EDT. This will be on Wednesday from Newfoundland and Greenland Time eastward across Eurasia, Africa, and Australia to the International Date Line. Most commercial calendars are based on Greenwich or Universal Time and will show this full Moon on Wednesday. The Moon will appear full for about three days from Monday evening through Thursday morning.
This will be a partial lunar eclipse. The Moon will start entering the partial shadow of the Earth at 8:41 PM EDT. The slight dimming of the Moon will be difficult to notice until the top edge of the Moon starts entering the full shadow at 10:13 PM. The peak of the eclipse will be at 10:44 PM with just the top 8.4% of the Moon in full shadow. The Moon will finish exiting the full shadow at 11:16 PM and the partial shadow on Wednesday morning at 12:47 AM.
This will be the second of four consecutive supermoons, appearing larger than last month’s supermoon and effectively tied with the full Moon in October for the closest full Moon of the year.
Tuesday and Wednesday evenings, September 17 and 18, the star Spica will appear a little over 2 degrees from the bright planet Venus. On Tuesday evening as evening twilight ends (at 8:10 PM EDT) Spica will be to the lower left of Venus and on the verge of setting on the west-southwestern horizon. Wednesday evening Spica will be a few hundredths of a degree closer and will appear below Venus, but will set about 2 minutes before evening twilight ends.
Wednesday morning September 18, at 9:29 AM EDT, the Moon will be at perigee, its closest to the Earth for this orbit.
Thursday morning, September 19, will be the last morning the planet Saturn will be above the western horizon as morning twilight begins.
If you are interested in spotting the planet Neptune through a telescope, Friday evening, September 20, will be when it will be at its closest and brightest for the year. Neptune will reach its highest in the sky early Saturday morning (at 1:02 AM EDT).
Saturday night into Sunday morning, September 21 to 22, the Pleiades star cluster will appear near the waning gibbous Moon. The Pleiades will be 5 degrees to the lower left as they rise on the east-northeastern horizon (at 9:23 PM EDT), 1.5 degrees to the upper left by the time the Moon reaches its highest for the night (at 4:44 AM), and less than 1 degree to the upper left as morning twilight begins (at 5:59 AM). The Moon will actually pass through the Pleiades (at about 8 AM) when daylight will mask these stars from view.
Sunday morning, September 22, will be the first morning Comet C/2023 A3 (Tsuchinshan-ATLAS) will be above the horizon before morning twilight begins, with the current brightness curve predicting it at visual magnitude 4. Unless it breaks apart, this comet is likely to brighten each morning until October 4 (after which it will no longer be above the horizon before twilight begins).
Sunday morning, September 22, at 8:44 AM EDT, will be the autumnal equinox, the astronomical end of summer and start of fall.
Monday night into Tuesday morning, September 23 to 24, the bright planet Jupiter will appear to the lower right of the waning half-full Moon. Jupiter will be 6 degrees to the lower right as it rises on the east-northeastern horizon (at 10:54 PM EDT). Jupiter will shift slightly clockwise as it moves away from the Moon.
Thursday afternoon, September 24, the waning Moon will appear half-full as it reaches its last quarter at 2:50 PM EDT (when we can’t see it).
Wednesday morning, September 25, the planet Mars will appear below the waning crescent Moon. Mars will be 6 degrees below the Moon as it rises on the east-northeastern horizon (at 12:16 AM EDT). Mars will be 5 degrees to the lower right as morning twilight begins (at 6:01 AM).
Thursday morning, September 26, the star Pollux (the brighter of the twin stars in the constellation Gemini the twins) will appear near the waning crescent Moon. Pollux will be 3 degrees to the lower left as it rises on the northeastern horizon (at 12:47 AM EDT) and will be 2 degrees to the upper left by the time morning twilight begins (at 6:02 AM).
Friday afternoon, September 27, at around 2 PM EDT, Comet C/2023 A3 (Tsuchinshan-ATLAS) will be at its closest to the Sun. This comet has an inbound orbital period of millions of years and may gain enough energy from this flyby of the Sun to leave the solar system forever.
Sunday morning, September 29, the star Regulus will appear near the waning crescent Moon. As Regulus rises on the east-northeastern horizon (at 4:01 AM EDT) it will be 2.5 degrees to the lower right of the Moon. Morning twilight will begin 2 hours later (at 6:05 AM) with Regulus 3 degrees to the right.
Monday afternoon, September 30, the planet Mercury will be passing on the far side of the Sun as seen from the Earth, called superior conjunction. Because Mercury orbits inside of the orbit of Earth, it will be shifting from the morning sky to the evening sky and will begin emerging from the glow of twilight on the west-southwestern horizon towards the end of October (depending upon viewing conditions).
Wednesday, October 2, at 2:46 PM EDT, will be the new Moon, when the Moon passes between the Earth and the Sun and is usually not visible. For much of the Pacific Ocean as well as the southern part of South America, part of Antarctica, and a thin slice of the southwestern Atlantic, the Moon will block some of the Sun in a partial eclipse. For a narrow strip from the Pacific south of the Hawaiian Islands across the Pacific, part of Chile and Argentina, and into the southwestern Atlantic Ocean, the Moon will actually pass in front of the Sun, blocking most of it from view in an annular solar eclipse. Because the Moon will be at apogee (its farthest from the Earth) just 70 minutes later (at 3:56 PM) it will not block the entire Sun from view and this will not be a total solar eclipse.
The day of or the day after the New Moon marks the start of the new month for most lunisolar calendars. Sundown on Wednesday, October 2, will be the start of Rosh Hashanah (the Head of the Year), the two-day Jewish New Year celebration that will end at sundown on Friday, October 4. Rosh Hashanah is the first of a series of holidays in Tishrei, the first month of the Hebrew calendar. The tenth day of Tishrei is Yom Kippur, the Day of Atonement. The 10 days from Rosh Hashanah to Yom Kippur, called the Days of Awe, are a time to reflect on the mistakes of the past year and make resolutions for the new year. The fifteenth day of Tishrei (close to the full Moon after next) is the start of the 7-day Sukkot holiday.
The ninth month of the Chinese year of the Dragon starts on Thursday, October 3.
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 Thursday evening, October 3, will probably mark the beginning of Rabiʽ al-Thani, also known as Rabi’ al-Akhirah.
Friday, October 4, will be the last morning Comet C/2023 A3 (Tsuchinshan-ATLAS) will be above the horizon before morning twilight begins, with the current brightness curve predicting a visual magnitude near 3, similar in brightness to many visible stars. It may be visible to the naked eye under dark sky conditions and even more impressive through binoculars or a telescope.
Saturday evening, October 5, you may be able to see the thin waxing crescent Moon 4.5 degrees to the lower left of the bright planet Venus. As evening twilight ends (at 7:41 PM EDT) the Moon will be a degree above the west-southwestern horizon. The Moon will set first 14 minutes later (at 7:55 PM).
Monday evening, October 7, the bright star Antares will appear 2 degrees to the right of the waxing crescent Moon. As evening twilight ends (at 7:38 PM EDT) the Moon will be 11 degrees above the southwestern horizon. Antares will set first about 20 minutes later (at 9 PM).
Thursday afternoon, October 10, the Moon will appear half-full as it reaches its first quarter at 2:55 PM EDT.
Saturday morning, October 12, at 11:10 AM, Comet C/2023 A3 (Tsuchinshan-ATLAS) will be at its closest to Earth. If it survives its pass by the Sun this will likely be when it will be near its brightest. Although it will be on the horizon as evening twilight ends on Friday, our first chance to see it above the horizon as it emerges from the glow of dusk likely will be Saturday evening, when the comet will be 4 degrees above the western horizon as evening twilight ends (at 7:31 PM EDT), similar in altitude and to the right of Venus. Over the next few nights 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 this comet. 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 dim quickly and will be below magnitude 6 by 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 could be a good show in the evenings after October 12.
Monday evening, October 14, the planet Saturn will appear near the waxing gibbous Moon. As evening twilight ends (at 7:28 PM 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 PM) 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 AM). For parts of Southern Asia and Africa the Moon will block Saturn from view, see http://lunar-occultations.com/iota/planets/1014saturn.htm for a map and information on the areas that will acually see this occultation.
Wednesday evening, October 16, at 8:57 PM EDT, the Moon will be at perigee, its closest to the Earth for this orbit.
The full Moon after next will be Thursday morning, October 17, 2024, at 7:26 AM EDT. This will be late Wednesday night in 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.
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