Solar System

Latest about Solar System

A streak of white shows interstellar comet 3I/ATLAS in the center of a starry night sky

Comet 3I/ATLAS could soon shower NASA's Jupiter probe in charged particles. Will it reveal more about the interstellar invader?

By Keith Cooper published

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?

Comets
Saturn is seen as a giant yellow planet with golden rings in front and a small moon is seen as well

Chemistry on Saturn's huge moon Titan is even weirder than we thought

By Keith Cooper published

Titan's chemical inventory is believed to bear some resemblance to the prebiotic soup on the early Earth.

Saturn

What is the moon phase today? Lunar phases 2025

By Tariq Malik, Daisy Dobrijevic last updated

Reference See what moon phase it is tonight and find out when you can see the rest of the moon phases for 2025.

Reference
A glowing red planet with a beam of fire going diagonally through it with a ball of light in the bottom right corner

Scientists discover 1st evidence of 4.5-billion-year-old 'proto-Earth' buried deep within our planet

By Sharmila Kuthunur published

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.

Earth
laptop graphic showing a comet on the screen and the words live streaming in the top right corner.

Watch comets Lemmon and SWAN make their closest approach to Earth on Oct. 24 (video)

By Daisy Dobrijevic last updated

The livestream is scheduled to start at 1:30 p.m. EDT (1730 GMT) on Oct. 24.

Comets
A close up of a the reddish-brown surface of Mars with white streaks across it

If life on Mars exists, it may be preserved in a frozen time capsule

By Samantha Mathewson published

If life ever existed on Mars, traces of it might still be frozen beneath the planet’s icy surface.

Mars
A gray scale image showing a labeled "dune crest" at the edge of a Martian gulley with wind patterns showing the geology of the formation.

Dry ice may burrow through Mars like sandworms in 'Dune'

By Samantha Mathewson published

Blocks of carbon dioxide ice appear to carve mysterious gullies on Mars as they melt down dune slopes and blast away sand.

Mars
An image of Earth from space, with bright brown land streaked with a dark green river on the right side of the image with a curved ridge from left to right meeting the river toward the bottom of the image

Where the ridge meets the river | Space photo of the day for Oct. 16, 2025

By Kenna Hughes-Castleberry published

From above Earth, LandSat 9's keen eye captures a stunning Y-shaped meeting of ridge and river in China's Tarim Basin.

Earth
An illustration showing the path of near-Earth asteroid 2025 TP5 as it passes by Earth

Asteroid discovered only 2 days ago just flew by Earth closer than the moon

By Elizabeth Howell published

A small asteroid, called 2025 TP5, safely flew by our planet on Oct. 15 at about a quarter of the distance to the moon.

Asteroids
Artist's illustration of Impulse Space's planned lunar lander circling the moon.

A new private moon lander rises: Impulse Space throws its hat into the lunar ring

By Mike Wall published

Impulse Space — which was founded by Tom Mueller, SpaceX's second-ever employee — just announced that it plans to build a robotic moon lander to help open the lunar frontier.

The moon
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