Scientists watch rings forming around a solar system world for the 1st time
Chiron is forming a ring system, and scientists seem to have caught the action.
Earth photobombs the sun in satellite image | Space photo of the day for Oct. 23, 2025
A new image from NOAA's GOES-19 satellite has captured a rate celestial cameo: Earth itself appearing in the view of the spacecraft's solar coronagraph.
Satellites watch glaciers melting in Patagonia | Space photo of the day for Oct. 22, 2025
New satellite imagery from the European Space Agency reveals nearly four decades of dramatic ice loss for two of Patagonia's largest glaciers.
Volcanic explosions on Mars may have left massive ice deposits at the Red Planet’s equator
Ancient explosive volcanic eruptions on Mars could help explain mysterious hints of buried ice from the Red Planet's equator, a new study finds.
Comet 3I/ATLAS could soon shower NASA’s Jupiter probe in charged particles. Will it reveal more about the interstellar invader?
At the end of October Europa Clipper will fly in line with 3I/ATLAS’ ion tail — but will any of the charged particles reach the spacecraft, and will the spacecraft be ready to receive them?
Chemistry on Saturn’s huge moon Titan is even weirder than we thought
Titan's chemical inventory is believed to bear some resemblance to the prebiotic soup on the early Earth.
Scientists discover 1st evidence of 4.5-billion-year-old ‘proto-Earth’ buried deep within our planet
Ancient rocks from Greenland, Canada and Hawaii preserve a rare chemical fingerprint that may come from the Earth before the moon-forming impact, a new study reports.
Watch comets Lemmon and SWAN make their closest approach to Earth live online on Oct. 20
The livestream is scheduled to start at 1:30 p.m. EDT (1730 GMT) on Oct. 20.
If life on Mars exists, it may be preserved in a frozen time capsule
If life ever existed on Mars, traces of it might still be frozen beneath the planet’s icy surface.
Dry ice may burrow through Mars like sandworms in ‘Dune’
Blocks of carbon dioxide ice appear to carve mysterious gullies on Mars as they melt down dune slopes and blast away sand.