Using the Hubble Space Telescope (HST), astronomers have observed a nearby ultra-diffuse galaxy designated F8D1. The new ...

The pair of galaxies merging into what is now known as the Infinity Galaxy (so named because of its uncanny resemblance to ...

NASA's Hubble Space Telescope and NASA's Chandra X-ray Observatory have teamed up to identify a new possible example of a ...

An infinity symbol–shaped galaxy hosts an active supermassive black hole. The growing giant may have come from the aftermath of a galactic smashup.

A rogue, middle-mass black hole has been spotted disrupting an orbiting star in the halo of a distant galaxy, and it's all ...

Unlike active galaxies that constantly pull in surrounding material, these black holes lie dormant, waking briefly to feast ...

An ancient galaxy throws astronomers a curveball as it confuses them, but may also have the answer to a question billions of ...

The spiral galaxy M83 is captured face-on, providing a clear view of its full structure. Chandra's X-ray data reveals ...

Some observatories that used to be dark and remote are now adjacent to bright urban centers. And sending all telescopes into ...

There's so much more to Andromeda than its eponymous galaxy. Here's a list of other targets to observe in the Princess.

Many astronomers are growing increasingly concerned that these outdoor lighting from roads, buildings and elsewhere could ...

Supermassive black holes, sitting at the core of galaxies, are known to be active and emit a lot of X-rays. Finding one way ...