Scientists are testing a novel way to measure cosmic expansion using time delays in gravitationally lensed quasars. Their ...

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

The Nancy Grace Roman Space Telescope has quietly crossed a threshold that turns a long‑planned mission into a near‑term ...

Approaching a black hole unleashes extreme tidal forces, stretching and tearing apart matter, including planets like Earth, a ...