Articles by

Mara Johnson-Groh

Boiling oceans may sculpt the surfaces of small icy moons

Small, icy moons might be boiling under their surface. Many moons in the outer solar system are...

Early views of a supernova’s first moments reveal a lopsided blast

When one supernova commenced, it looked like an olive — at least before it got shaken and...

This black hole flipped its magnetic field

The magnetic field swirling around an enormous black hole, located about 55 million light-years from Earth, has...

Betelgeuse’s companion star revealed in new images

Hidden cozied up to Betelgeuse, a bright red star in the constellation Orion, astronomers may have finally...

A gas cloud 5,500 times as massive as the sun lurks nearby

Astronomers have found a giant interstellar cloud surprisingly close to Earth. Lurking about 300 light-years from our...

A gas clump in the Milky Way’s neighborhood might be a ‘dark galaxy’

A potential dark galaxy — one made primarily of dark matter — may have been spotted in...

A quantum computing milestone is immediately challenged by a supercomputer

The tug-of-war between quantum computers and classical computers is intensifying. In just minutes, a special quantum processor,...

The universe’s first supernovas probably produced water

The first generation of stars in the universe could have produced significant amounts of water upon their...