Whole planets may be covered with glowing red, blue and green life-forms.
These little "redback" and "black widow" stars have intensely magnetic poles, which could help explain how they eat their twins.
The United States Space Command will officially be up and running by the end of the month, Vice President Mike Pence said today (Aug. 20) at a meeting of the National Space Council.
What are the building blocks of everything that makes up the universe, and where did it all come from?
There are bright lights all over the universe where galaxies are smashing together. And now astronomers have a new way to find them.
Astronomers have been watching the black hole at the center of our galaxy for 20 years, and in May, they saw something they'd never seen before.
There are ancient, massive galaxies haunting the dusty reaches of our universe, invisible to the Hubble Space Telescope. But now astronomers sifting through infrared data have discovered 39 of them.
A team of four NASA spacecraft finally caught sight of a phenomenon scientists have been hunting for years: an interplanetary shock.
Researchers recently identified cosmic iron traces in snow that fell in Antarctica. Preserved in the snow was dust containing a rare isotope that originated in a supernova.
A cloaked black hole found lurking behind a cloud of gas dates to the early cosmic years of the universe.
It seems that at some point after astronauts visited the moon, a powerful moonquake sent boulders tumbling across the lunar surface. Here's what they tell us.
One of the year's brightest meteor showers is about to take flight. If you face cloudy or light-polluted skies at home, however, never fear — the Perseids will also be streamed online.
The U.S. Air Force's X-37B military space plane has now been circling Earth for 700 days, just a few weeks shy of the vehicle's spaceflight-duration record.
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