"Have you ever flipped through old photo albums and suddenly found something fascinating hidden in the background of a ...

These glass plates recorded images of the night sky ... were all moving away from the Milky Way. Hubble’s results suggested the farther away a galaxy was, the faster it was moving away from ...

Astronomers are celebrating the completion of a 2.5-billion-pixel panoramic picture of the ... is the “closest” large galaxy to ours, at a distance of 2.5 million light years away — equal to the ...

This image from the NASA/ESA Hubble Space Telescope features Arp 72, a very selective galaxy group that only includes two galaxies interacting due to gravity: NGC 5996 (the large spiral galaxy) and ...

Arizona's dark skies are a haven for astronomers and photographers. Some communities are fighting to keep them that way.

Around 2015, astronomers took on the painstaking task of stitching together Hubble Space Telescope images of this galaxy, but that effort had focused on the galaxy's northern half. Still, however, the ...

A team of astrophysicists have found flares of light in Sagittarius A*, a supermassive black hole in the center of the Milky ...

These glass plates recorded images of the night sky ... galaxies were all moving away from the Milky Way. Hubble's results suggested the farther away a galaxy was, the faster it was moving ...