The Hubble Space Telescope has been used to study NGC 1052-DF2 — a galaxy that is lacking dark matter. Credit: NASA's Goddard ...

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

Black holes, born from dying stars, are cosmic giants that grow by consuming matter and merging with others. While invisible ...

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

The University of Innsbruck is coordinating a new FWF special research area on the dark universe, which seeks answers to the ...

These gigantic structures, which contain hundreds or even thousands of galaxies bound together by gravity, offer important ...

Longest solar eclipse 2027 brings over six minutes of totality across Egypt and Africa. Discover when, where, and how to ...

After a yearslong series of setbacks, NASA's Escape and Plasma Acceleration and Dynamics Explorers, or ESCAPADE, mission has ...

Researchers have created a fully relativistic model showing that gravitational waves might carry hidden clues about dark ...

X-ray space telescopes caught a supermassive blackhole flinging matter into space at a fifth of the speed of light ...

A sudden X-ray flare from a supermassive black hole in galaxy NGC 3783 triggered ultra-fast winds racing outward at a fifth the speed of light—an event never witnessed before. Using XMM-Newton and ...

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