A little-known chapter of the Hubble Space Telescope’s history is a reminder of the risks of looking at the sun ...

The first black hole that astronomers observed "turning off" just turned back on, releasing jets of hot gas into the cosmos.

Black holes are some of the universe's greatest mysteries, incredibly dense and sometimes massive void that suck in anything ...

NASA's TESS exoplanet hunter has found the fastest-disintegrating planet ever. Losing a moons-worth of matter every million ...

In the years following the launch of NASA's Hubble Space Telescope, astronomers have tallied over 1 trillion galaxies in the universe. But only one galaxy stands out as the most important nearby ...

Amateur astronomers who have purchased telescopes from leading suppliers in the U.S. may be entitled to a payment from a ...

This rare quasar with spiral arms could help astronomers understand how supermassive black holes feed and grow.

Active galactic nuclei (AGN) are among the most energetic phenomena observed in the universe. These luminous objects, powered ...

Palomar 5 is a unique star cluster that stretches across 30,000 light-years and is located about 80,000 light-years from ...

“He was very taken with the thought that no phenomenon becomes a true phenomena until it has been observed,” Wald told Salon ...

These are the planets that will be visible with the naked eye. A rare parade of planets will light up the night sky ...

The James Webb Space Telescope has captured a mid-infrared picture of Sagittarius A*, filling in a long-standing gap in ...