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How do asteroids spin in space? The answer could help us prevent a catastrophic Earth impact
By Sharmila Kuthunur published
From how space rocks wobble to where to hit them, scientists are learning the fine art of asteroid deflection — and it could one day save Earth.

A volcano or a meteorite? New evidence sheds light on puzzling discovery in Greenland's ice sheet
By James Baldini published
New research suggests that this mystery platinum signature underneath the Greenland ice sheet may have originated from a volcanic fissure eruption in Iceland, not space.

Is the universe infinite, or does it have a limit?
By Paul Sutter published
If the universe is expanding, then what is it expanding into, and what is it expanding from? Where's the edge of the universe, and where is its center?

This might be the smallest clump of pure dark matter ever found
By Keith Cooper published
The discovery of what is potentially the smallest clump of dark matter ever seen strengthens the case for cold dark matter.

Uranus and Neptune may not be 'ice giants' after all, new research suggests
By Paul Sutter published
We actually know very little about what's going on inside Uranus and Neptune, causing researchers to propose that these planets be called "rocky giants" instead.

Rubin Observatory spins beneath the stars | Space photo of the day for Oct. 13, 2025
By Kenna Hughes-Castleberry published
The Vera C. Rubin Observatory's Simonyi Survey Telescope scans the heavens to start its decade-long exploration in the search for dark matter.

Scientists open untouched Apollo 17 lunar samples from 1972 — they may hold clues about the moon's violent origins
By Keith Cooper published
The isotopic ratio of sulfur-33 on the moon differs from that of Earth. Did the moon's sulfur instead come from the impactor that formed it?

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.
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