The comet is the third object ever confirmed to have entered our cosmic neighborhood from elsewhere in the galaxy. Space ...

X-ray: NASA/CXC/Univ. of Chicago/H. McCall Galaxy clusters are the most massive objects in the universe held together by ...

"This observation also demonstrates that we can use Webb to find individual stars when the universe was only 5% of its ...

Learn more about the supermassive black hole in galaxy NGC 3783 and how its powerful blast is similar to our sun’s coronal ...

Astronomers have spotted the longest gamma-ray burst ever seen, a cosmic explosion that lasted seven hours — and they ...

Leading X-ray space telescopes XMM-Newton and XRISM have spotted a never-seen-before blast from a supermassive black hole. In ...

NASA has visualized the cataclysm, which is thought to have caused a mysterious eruption of gamma rays captured by telescopes ...

NASA's Hubble Space Telescope and Chandra X-ray Observatory joined forces to find an elusive intermediate mass black holes in ...

Space is inaccessible to the vast majority of us, but it’s not as far away as you might think. The von Kármán Line, which is ...

NASA has finished building the Nancy Grace Roman Space Telescope, completing assembly of the agency’s next flagship ...

A Rutgers astrophysicist is helping to solve a cosmic puzzle that has astronomers scratching their heads. The mystery centers ...

The European Space Agency said that the black hole inside the spiral galaxy NGC 3783 has the mass of 30 million suns.