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earthskyscience.bsky.social
EarthSky
@earthskyscience.bsky.social
3K followers 240 following 2.8K posts
Updates on your cosmos and world.
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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. 🌒🌌🔭
buff.ly/vX1n5Cm

📸 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:
buff.ly/TusXyVX

📸 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? 🦠🔴🔭
buff.ly/ROBlDye

📸 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
earthskyscience.bsky.social
The colorful #Embryonebula in Perseus ... Andy Dungan captured this beautiful image from near Cotopaxi, Colorado, on Sunday. Thank you, Andy! #nebula 🌌🔭📸
buff.ly/Ke3ffZO

See more great images, and submit your own recent photos, at EarthSky Community Photos:

buff.ly/wjemuid
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
earthskyscience.bsky.social
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!
buff.ly/wjemuid
Long, linear branch-like formations of tiny, delicate ice crystals.
November 24, 2025 at 9:01 PM
earthskyscience.bsky.social
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! 🪐🔭📸
buff.ly/Y9dle5w

See more great images:

buff.ly/wjemuid
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
earthskyscience.bsky.social
For 2 seasons in Moreton Bay, Australia, researchers have attached suction-cup cameras to #humpbackwhale calves. The researchers said that the footage shows Moreton Bay is a critical nursery and rest area for humpbacks during migration. #whales 🐋
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📸 Stephanie Stack/ Griffith Univ.
A young whale with the top half of its body above the water.
November 24, 2025 at 2:30 PM
earthskyscience.bsky.social
No human has been near the #moon since Apollo 17 in December 1972. But that’s about to change. Artemis 2 could launch as early as next February, and its dress rehearsal is coming up. Read more: buff.ly/EX652iJ

📸 NASA/ NASA/ Kim Shiflett.
Multiple levels indoors with a tall rocket standing upright behind struts.
November 23, 2025 at 5:33 PM
earthskyscience.bsky.social
#Earth spins fast - at the equator, about 1,000 miles per hour (1,600 km per hour). And it rotates once every day. Yet you don’t feel Earth spinning. Why not? Read here: buff.ly/4flMxxT

📸 NASA.
Swirly blue and white half-lit Earth and the moon appear side by side in deep space against a black background.
November 23, 2025 at 5:03 PM
earthskyscience.bsky.social
That's a hard nope! What would happen if a small #blackhole passed through your body? A Vanderbilt University professor, Robert Scherrer, proposes an answer. Here's what would happen: buff.ly/TX5GJzT

📸 ESO/ L. Calçada.
Blue star glows in space as a dark circular black hole companion eclipses part of its surface.
November 23, 2025 at 4:33 PM
earthskyscience.bsky.social
Tonight after sunset watch for the waxing crescent #moon not far above the horizon in #Sagittarius. The glare will hide the stars of the Teapot asterism, which really is teapot-shaped. That's the direction of the galactic center. Read more: buff.ly/moaQbYD
Sky chart with 2 positions of crescent moon, the November 23 one in the midst of a labeled teapot-shaped group of stars.
November 23, 2025 at 4:15 PM
earthskyscience.bsky.social
The queen returns! 👑 At an approximate age of 75, Wisdom the #albatross returned this week to Midway Atoll National Wildlife Refuge for nesting season. She is the world's oldest-known bird.

Read about Wisdom at: buff.ly/MFkj4H9

📸 USFWS/ Jon Plissner.
Wisdom, standing among grass, is a white bird with black eyes and wings, and pale bill and legs.
November 23, 2025 at 4:03 PM
earthskyscience.bsky.social
An EarthSky community member, Frank Merenda in Fillmore, California, captured this image of #asperitas clouds on November 13. Thank you, Frank!

Read about asperitas, the newest-named form of cloud, at: buff.ly/zzFdbVv
Rippling gray asperitas clouds billow overhead as soft sunset light glows above trees and rooftops.
November 23, 2025 at 3:33 PM
earthskyscience.bsky.social
A comet with 3 bright lumps in the nucleus and text that reads: "Fragmentation of Comet 2025 K1 ATLAS. Eliot Herman caught these 3 fragments of Comet 2025 K1 ATLAS (not to be confused with our interstellar visitor Comet 3I/ATLAS) on November 19 from California.
November 22, 2025 at 8:00 PM
earthskyscience.bsky.social
Ailee Farey captured this image at the Cliffs of Moher in County Clare, Ireland, and wrote, "The beauty of Ireland cannot be denied." We agree! Thank you, Ailee!
buff.ly/kbdNYSL

Have a recent photo of your own to share? Submit it here!
buff.ly/3ZFLovY
Stormy sky over seaside cliffs as waves crash into their base and sunlight breaks over the distant sea.
November 22, 2025 at 6:33 PM
earthskyscience.bsky.social
Asperitas #clouds have a wavy undersurface. They don't bring rain but can be seen near storms. In 2009, Gavin Pretor-Pinney, founder of The Cloud Appreciation Society, proposed the Latin-derived name, which was officially approved in 2017.☁️

📷 Frank Merenda buff.ly/Lo3cEW9
Turbulent lower surface of clouds seen from below. Text that reads: Cloud of the day: Asperitas.
November 22, 2025 at 4:45 PM
earthskyscience.bsky.social
Tonight, shortly after sunset, the waxing crescent moon is near the Teapot in #Sagittarius. Sagittarius sets a little earlier every evening in November. Catch it before it’s gone. Watch this video for more!
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And read more here: buff.ly/moaQbYD
November 22, 2025 at 3:33 PM
earthskyscience.bsky.social
Dan Brown captured these #lenticular clouds over Grand Mesa in western Colorado. #GrandMesa is the largest flat-topped mountain in the world. Thank you, Dan!
buff.ly/r2WWg0n

Have a photo of your own to share? Submit it here!
buff.ly/3ZFLovY
3-layered flat, roundish cloud hovering over distant plateau above dry field and weathered ranch gate.
November 22, 2025 at 3:03 PM
earthskyscience.bsky.social
Two solar #prominences graced the #sun’s edges over the past day. The 1st erupted as a lifting filament from the sun’s southeast limb late yesterday). A 2nd prominence burst above the sun’s north pole this morning. Read more at: buff.ly/TusXyVX

📸 NOAA/ GOES.
Close view of the Sun’s surface with a bright erupting prominence rising in glowing red plasma.
November 22, 2025 at 2:48 PM
earthskyscience.bsky.social
A Cornell-led team said this month that it has created the first “color key” of microorganisms that live in Earth’s clouds. The idea? If similar color signatures show up in an exoplanet’s clouds, it could be a clue that something alive is hiding there. Read more: buff.ly/O1SFwyM

📸 Pixabay/EarthSky.
World with olive green, white and blue and text.
November 21, 2025 at 5:03 PM
earthskyscience.bsky.social
When the November 11 geomagnetic storm brought #auroras to southern latitudes, EarthSky’s Kelly Kizer Whitt was watching from southern Wisconsin. She captured strange blobs of pulsating aurora. These weird aurora blobs were proton auroras. Read about them at: buff.ly/tcyqmiL

📸 Kelly Kizer Whitt.
Red and green aurora on the right plus a large, bright blob of green at center.
November 21, 2025 at 4:33 PM
earthskyscience.bsky.social
The sailing stones, or sliding stones, of #RacetrackPlaya have been observed and studied since the early 1900s. How could rocks – driven by some unseen force – slide across the ground, leaving behind a trail? Read how at: buff.ly/7VtbpZ7

📸 Tahoenathan/ Wikimedia Commons (CC BY-SA 3.0).
Large squarish stone on dry, cracked desert ground with streaks behind it showing it slide along the ground.
November 21, 2025 at 4:03 PM
earthskyscience.bsky.social
Wells Shoemaker in Fish Creek Cove, Utah, helped out this #hummingbird stunned after a window collision. Thank you, Wells! And we are sure the hummingbird thanked you, too!
buff.ly/xW4FRCw

Have a photo of your own to share? Submit it to us, here!
buff.ly/3ZFLovY
Hands gently holding a tiny hummingbird with bright green feathers resting calmly in the sunlight.
November 21, 2025 at 3:33 PM
earthskyscience.bsky.social
The far-side sun blast we reported yesterday sent a blob of sun stuff into space in the direction of Venus. This view is from ENLIL (a solar-storm forecast model) which gives an estimated arrival time of arrival. Venus is colored green and Earth, in yellow. Read more: buff.ly/TusXyVX

📸 NASA.
Heliospheric model map showing solar wind density spirals and planet positions for November 24, 2025.
November 21, 2025 at 3:18 PM