Later, I did some research and realized these weren't smudges at all; they were newly formed stars! Honestly, my eyes widened ...

For astronomers studying dark matter, the Bullet Cluster is one of the greatest laboratories in the universe. Follow-up ...

New research published this week confirms Stephen Hawking's 1971 theory that the surface area of black holes never shrinks, ...

Astronomers have uncovered one of the earliest and most complex galaxy mergers ever observed — a system involving at least five physically interacting galaxies, spotted just 800 million years after ...

CC0 Usage Conditions ApplyClick for more information. Astronomers taking inventory of the material in the local universe keep coming up short. A new result from NASA’s Chandra X-ray Observatory about ...

When two pairs of galaxy clusters collide, the final result is not four separate objects, but one giant galaxy cluster. Astronomers using data from NASA's Chandra X-ray Observatory and several other ...

"Black-hole mergers can be understood as a superposition of different signals, just like the music of an orchestra consistent ...

When we look up at the night sky, most of us see stars, most of which are relatively close: less than 5,000 light-years from Earth. (The word “relatively” is a necessary qualifier, as a light-year is ...

A black hole just got kicked across the universe — and scientists finally measured its incredible speed and direction. Born ...