It was a bump in the night. A big one.On Nov. 23, 2023, waves from a colossal merger of two black holes reached Earth and were picked up by the LIGO-Virgo-KAGRA Collaboration, a group that detects ...

Our Milky Way could have many more satellite galaxies than we've detected so far. They're just too faint to be seen.

The annual competition for professional and amateur astrophotographers released its shortlisted images, which capture the ...

A massive, spacetime-warping cluster of galaxies is the setting of today's NASA/ESA Hubble Space Telescope image. The galaxy ...

NASA’s James Webb Space Telescope has revealed the “Cosmic Owl,” a rare structure of two colliding ring galaxies.

Stars don't form out of nothing, but tracking the gas and dust that do eventually form stars is hard. They float around the ...

A new galaxy was found with 10,000 more of unseen mass than the Milky Way. Now, scientists are wondering if there are more of ...

UY Scuti, the largest known star in the universe, is a hypergiant that truly defies imagination. Located thousands of light-years away, this enormous gas ball has a radius of 1,708 times that of our ...

A surprising discovery at the heart of the Milky Way is forcing scientists to rethink how massive structures called Fermi ...

New supercomputer simulations suggest the Milky Way could be surrounded by dozens more faint, undetected satellite ...

The mighty James Webb and Hubble space telescopes united to reveal stars being born inside the Small Magellanic Cloud, which ...

But in the past two decades, new types of black holes have been seen and astronomers are beginning to understand how they ...