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"The two resulting black holes must also be able to separate rather than immediately fall back together."

Here are some of the most spine-chilling space photos to scare your pants off this Halloween.

Analog Astronaut Commander and Aquanaut Michaela Musilova led underwater simulated “spacewalks” in low visibility to test astronaut safety and communication protocols during simulated space missions.

Scientists are still learning about a cosmic 'string of pearls,' a unique celestial relic left by a supernova witnessed by humanity around 850 years ago, which has a zombie star at its heart.

Cowboy Space just gave us our first look at its "Big Iron" rocket, which the company will use to build its AI data center constellation. Big Iron's debut is targeted for late 2028.

'The fact that I get to work with some of the greatest creators and artists working today feels like a dream.'

On Oct. 27, 1961, NASA launched the first test flight of its new Saturn I space launch vehicle. Here's why it mattered.

Rover tracks can be seen on the Martian surface, left behind by NASA's Perseverance Mars rover.

The man who portrayed the U.S.S. Enterprise’s Pavel Chekov has left us after a 60-year stage and screen career

Baffling long radio echo delays have prompted a range of potential explanations, most of which focus on a variety of unexplained natural phenomena occurring in Earth's atmosphere.