Before defining what a light-year is, we should define what a light-year is not: It is not a measure of time, but rather a ...

Scientists have detected the collision of two massive black holes merging beyond the Milky Way. The two black holes, each ...

The Andromeda Galaxy (M31) is one of the most fascinating objects in our night sky and is located relatively close to the Milky Way, making it an important focus for astronomers. This spiral galaxy, ...

Scientists predict up to 100 invisible galaxies may orbit the Milky Way, hiding just beyond our current detection limits.

A newly discovered ice comet from deep space may be over 7 billion years old, making it the most ancient comet scientists ...

Astronomers have discovered a giant, 500-light-year-wide cavity between two star-forming regions in the constellations ...

New supercomputer simulations suggest the Milky Way could be surrounded by dozens more faint, undetected satellite ...

Professor Avi Loeb, a theoretical physicist and cosmologist from Harvard University, told MailOnline why he thinks a new ...

The mighty James Webb and Hubble space telescopes united to reveal stars being born inside the Small Magellanic Cloud, which ...

A newly discovered object from deep space may be the oldest comet ever observed—possibly more than 7 billion years old, and ...

Discover 3I/ATLAS, an interstellar comet with a reddish hue, rich in water ice, and possibly predating the solar system.

In summer, we face toward the Milky Way's hub in the Teapot constellation, home to the galaxy's supermassive black hole.