The Andromeda galaxy (M31) has been captured by the Chandra X-ray Telescope. See the imagery and hear a sonification of it. "This image of M31 is released in tribute to the groundbreaking legacy of Dr ...

It’s “common knowledge”—and the scare quotes should be a warning—that the sun is an average star.

The high-resolution image of the Andromeda Galaxy taken by China's Wide Field Survey Telescope. [Photo/CCTV News] Utilizing the spectrum data gathered by the Large Sky Area Multi-Object Fiber ...

In a stroke of luck, astronomers saw the comet C/2025 K1 (ATLAS) break into four or five fragments in November after it passed close to the sun.

Study Suggests A Galactic Collision Is Remaking One Of Earth’s Closest Neighboring Galaxies In A Nutshell The Small Magellanic Cloud, a dwarf galaxy visible from Earth’s Southern Hemisphere, is ...

Astronomers have discovered a flattened structure of matter around the Milky Way that explains the unusual motion of nearby galaxies.

Each spring, amateur astronomers attempt the ultimate stargazing challenge—an overnight quest to spot every galaxy, nebula, and star cluster in Charles Messier’s famous catalog. Photographer Alan Dyer ...

A recently detected flash of energy appears to have emanated from the wreckage of colliding galaxies, according to an ...

In 2014, a NASA telescope observed as the infrared light emitted by a massive star in the Andromeda galaxy gradually grew brighter. The star glowed more intensely with infrared light for around three ...

The Andromeda Galaxy, shown here with two of its satellite or companion galaxies, is one of few objects in the night sky visible with the unaided eye that's outside our own Milky Way Galaxy. And I do ...

Just how far can we see on a clear, dark night? If you’re a regular reader of this column, you know that the stars overhead lie many trillions of miles away, but these make up only a tiny fraction of ...