Europa's cracked-ice surface

Solar System

Icy Moon Europa May Host Water Near the Surface

Radar measurements of ice on Earth suggest that Jupiter's moon Europa might host water near its surface.

Neptune

Solar System

Summer on Neptune is Surprisingly Chilly

Even though Neptune is entering its version of summer, it's actually cooling down — except for its poles, which are mysteriously warming up.

Supermassive black hole binary animation

Black Holes

These Two Black Hole Behemoths Will Merge in 10,000 Years

Astronomers have discovered a pair of supermassive black holes that whirl around each other every two years.

a dark purple orb is half illuminated by a bright white, smaller orb to its left

Exoplanets

Astronomers Watch the Making of a Super-Earth

Gaseous mini-Neptunes may become rocky super-Earths when they lose their atmospheres. Now, astronomers have caught that process in action.

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