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EarthSky
@earthskyscience.bsky.social
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Updates on your cosmos and world.
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Steven Sweet in Mississauga, Ontario, captured this view of last night's #moon alongside 2 #stars of the constellation #Capricornus. He wrote: "Just like the illustration EarthSky posted." We're glad you went out to take a look, Steven – thank you!

Visit EarthSky's night sky guide:
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Clouds at the bottom and left side of the image, with the moon at the right side and 2 stars (49-Cap and Nashira) at the top left.
November 28, 2025 at 1:00 AM
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Adziri Sackey in Pokuase, Ghana, took this spectacular image on Tuesday. Thank you, Adziri! See the #moon at the top left? And those #crepuscularrays are stunning.
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See more crepuscular ray images here:
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View of a city from a high building. The horizon looks orange, the sky blue, and there are some orangish/pinkish rays of light coming from the sunset.
November 27, 2025 at 11:02 PM
earthskyscience.bsky.social
A solar halo ... times 2! Judy Boyle in Whitehall, Montana, captured this beautiful shot of a double #solarhalo on Tuesday. Thank you, Judy! ☀️🔭📸
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See more great images, and submit your own recent photos, at EarthSky Community Photos:

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2 rings of light around the bright sun over some hills in the distance.
November 27, 2025 at 9:01 PM
earthskyscience.bsky.social
Do you know why the constellation #Andromeda is known as the Chained Lady? It's a great myth, featuring a cast of characters that surround Andromeda in the night sky. Get the details and find out more about Andromeda here: 🌌🔭
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📸 EarthSky.org.
Star chart of constellations Cassiopeia and Andromeda with the Andromeda galaxy between them. Stars Schedar in Cassiopeia and star Alpheratz in Andromeda labeled.
November 27, 2025 at 6:01 PM
earthskyscience.bsky.social
The Atlantic #hurricane season officially ends this Sunday. This season was slightly less active than usual in terms of total #storms, but more active in terms of total storm #energy. Find out more:
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📸 NOAA Hurricane Hunters in the eye of Hurricane Melissa. Via Kevin Doremus/ NOAA.
Interior view of a tall, curved wall of clouds under a blue sky, with airplane and part of the engine with its spinning propeller visible in the foreground.
November 27, 2025 at 5:30 PM
earthskyscience.bsky.social
Did you know that #Yellowstone naturally has thousands of small #earthquakes a year? In 2021, Yellowstone experienced 27 earthquake swarms, or clusters of earthquakes at a similar place and time. And just 1 of these swarms consisted of 825 quakes!
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📸 Carsten Steger/ Wikimedia.
View down on a pool of water that is blue at center and has rings of the colors of the rainbow leading out to dark orange on the edge.
November 27, 2025 at 4:30 PM
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Pictured here is #Eros, which became the 1st near-Earth asteroid to be discovered in 1898. Now, the European Space Agency says astronomers have just spotted the 40,000th of these objects. 😱 🌎🔭

Find out more about these 40,000 #asteroids:
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📸 NASA/ JPL/ JHUAPL/ APOD.
A lumpy, irregularly shaped asteroid, cratered, white and gray against a black background. Bold white text says 'Astronomers just discovered the 40,000th near-Earth asteroid.'
November 27, 2025 at 3:30 PM
earthskyscience.bsky.social
Happy #Thanksgiving! You might be glad to know that a day of #overeating shouldn’t cause lasting damage to your #health. A dietitian says your body is well equipped to handle the extra #calories, and a few days of indulgence don’t define your overall health:
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📸 Alex Lauzon/ Unsplash.
Squirrel looking at the camera, with its right cheek pouch full.
November 27, 2025 at 2:30 PM
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Spot #Sculptor these November evenings! This faint #constellation is home to the South Galactic Pole and can be seen low on the southern horizon from the Northern Hemisphere. A tiny triangle of stars, but a huge window beyond our #MilkyWay. Read more: 🌌🔭
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📸 EarthSky.org.
Sky chart showing triangular constellation Sculptor and the star Fomalhaut at its top right.
November 27, 2025 at 1:00 AM
earthskyscience.bsky.social
A golden sunrise in the high country ... Christoph Stopka in Westcliffe, Colorado, captured this beautiful #sunrise at the foothills of the #RockyMountains last Friday. Thank you, Christoph! 🌄📸
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Go to EarthSky Community Photos to see more great images:

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Mountain peak partially bathed in sunlight, with low-lying fog and clouds in the foreground.
November 26, 2025 at 11:00 PM
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Last week, scientists said they've identified what they call the 5 Great Forests of Mesoamerica. These forests, which stretch from southern Mexico to northern Colombia, are critical to the survival of migratory songbirds. Read about the 5 great forests:
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📸 Rhododendrites/ Wikimedia.
A small yellow and black bird on a tree branch.
November 26, 2025 at 6:01 PM
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NASA’s OSIRIS-APEX spacecraft made a close flyby of #Earth on Sep. 23, 2025. This gravity assist will help the spacecraft adjust its trajectory toward the infamous asteroid #Apophis, which it is set to reach in 2029. Yesterday, NASA shared breathtaking images of the flyby:
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📸 NASA.
Spacecraft parts at bottom, and close view of Earth, with many white clouds visible.
November 26, 2025 at 4:30 PM
earthskyscience.bsky.social
While activity on the Earth-facing side of our star is currently low, there seems to be drama on the far side! Around 20 UTC last night we observed a stunning prominence of solar material and magnetic fields over the northeastern horizon. Read today's #sun news at: buff.ly/XLF6yzj

📸 NOAA/ GOES.
November 26, 2025 at 3:30 PM
earthskyscience.bsky.social
Did you know? A large rocky body - known as #Theia - slammed into the early #Earth about 4.5 billion years ago. But where did Theia come from? A team of researchers in Germany and Chicago said that Theia likely originated closer to the sun than Earth. 🔭
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📸 MPS/ Mark A. Garlick.
Rocky planet with many bright glowing spots and craters. A smaller rocky body is colliding with it, with the sun in the distance.
November 26, 2025 at 2:30 PM
earthskyscience.bsky.social
Tameem Altameemi captured this image of the #Soulnebula from the UAE and wrote: "I noticed a striking dark feature that resembles a lost #astronaut drifting within the #nebula’s glowing clouds, a purely visual impression, adding a human-like touch to this cosmic landscape." Thanks!
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Brownish and light blue clouds in deep space, with the figure of a human in the bottom.
November 26, 2025 at 1:00 AM
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Hoot, hoot! Tim Rubbert saw this great gray #owl in northwestern Montana on Monday. Thanks for sharing your photo with us, Tim! 🦉📸
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Do you have an image of your own to share? Submit it here:
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Go to EarthSky Community Photos to see many more images:

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Large owl with a round face and yellow eyes flying over a grassy pasture.
November 25, 2025 at 11:00 PM
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We’ve never needed good #science more than we do right now. Support #EarthSky in 2025 and help us keep it going strong. Plus ... with any #donation of $100 or more, we'll send you a FREE 2026 EarthSky Lunar Calendar! 🌎🌌🚀🔭

Visit here for more information on how to help!
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Cartoon of astronaut floating over and touching a yellow moon with craters, in deep blue space with stars. Bold white text says 'We're over the moon for your support.'
November 25, 2025 at 9:01 PM
earthskyscience.bsky.social
This time of year is great for saying hello to everyone’s favorite #constellation: Orion the Hunter! Find #Orion now and enjoy it for months to come. No doubt, Orion is the easiest-to-identify of all constellations. Look for it in the eastern sky this month. 🌌🔭
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📸 EarthSky.org.
Star chart of constellation Orion with stars labeled. The Orion nebula is also labeled.
November 25, 2025 at 6:03 PM
earthskyscience.bsky.social
See the #moon pass through #Capricornus tonight! The waxing crescent moon will lie in the arrow-shaped constellation Capricornus the Sea-goat after sunset. They’ll set a few hours after sunset. You’ll need a dark sky to spot the stars of Capricornus. 🌒🌌🔭
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📸 EarthSky.org.
A thick crescent shape, the moon, moves among 7 small dots, the constellation Capricornus.
November 25, 2025 at 4:30 PM
earthskyscience.bsky.social
We had a minor geomagnetic storm last night, which created beautiful #auroras for folks at high latitudes. The exciting part? We could see more minor storms through November 27. If you’re in the right location, keep an eye on the sky! 🌍☀️

Read our daily sun news:
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📸 NOAA/ GOES.
Brownish sun with darker areas in the middle and a label that reads: coronal hole.
November 25, 2025 at 3:30 PM
earthskyscience.bsky.social
If there's #life on #Mars today, scientists think it's likely underground. Researchers in China say they've found the 1st #caves on Mars potentially created by water. Could they be homes for life, now or in the past? 🦠🔴🔭
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📸 J. Fowler/ Wikimedia/ M. Tarbell/ W. Fink/ Univ. of Arizona.
Underground cave with shafts of sunlight from openings in top, and small robotic rovers on the ground. Bold white text says 'Could water-carved caves on Mars be home to life?' Crater seen from above with deep round hole in its center. Description in white text on black background is below it.
November 25, 2025 at 2:30 PM
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The colorful #Embryonebula in Perseus ... Andy Dungan captured this beautiful image from near Cotopaxi, Colorado, on Sunday. Thank you, Andy! #nebula 🌌🔭📸
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See more great images, and submit your own recent photos, at EarthSky Community Photos:

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Bright bluish and reddish cloud-like formation in space, with stars and other dark "clouds" in the background.
November 25, 2025 at 1:00 AM
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Brrr, winter's coming! Karen Brookes in Gloucester, UK, sent us this photo of #icecrystals on the inside of her car's windshield on Friday. They look so delicate. Thank you! ❄️📸
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Go to EarthSky Community Photos to see more great images. And give a like to your favs!
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Long, linear branch-like formations of tiny, delicate ice crystals.
November 24, 2025 at 9:01 PM
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Your support = more #science, more stars, more wonder. Donate to #EarthSky and be part of something bigger. Plus ... with any #donation of $100 or more, we'll send you a FREE 2026 EarthSky Lunar Calendar! 🌎🌌🚀🔭

Visit here for more information on how to help!
buff.ly/q47QWBg
Cartoon of astronaut floating over and touching a yellow moon with craters, in deep blue space with stars. Bold white text says 'We're over the moon for your support.'
November 24, 2025 at 6:02 PM
earthskyscience.bsky.social
Saturn and Titan ... Guido Santacana in San Juan, Puerto Rico, captured this view of majestic #Saturn on Friday, just after its moon #Titan - the little dot on the right, just below the ring - had passed in front of it. Thank you, Guido! 🪐🔭📸
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See more great images:

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Slightly flattened planet with a banded atmosphere and a ring around it seen edge-on. A tiny orangish dot is on the right edge of the planet, just below the ring.
November 24, 2025 at 4:30 PM