Astronomers have discovered an extraordinary new giant radio galaxy with plasma jets 32 times the size of our Milky Way.

A radio telescope in South Africa has unearthed a giant galaxy—dubbed a "cosmic megastructure"—with plasma jets that measure ...

Hubble revealed a universe of galaxies that existed beyond ours — but he couldn't have done it without a little help.

The Milky Way is our galactic home, but just how big is it?  Dive into this fascinating exploration of the galaxy's size, scale, and structure. Get ready for an astronomical perspective on our place ...

The magnificent Andromeda galaxy (Messier 31), stands out as the most important nearby stellar island to our Milky Way, and ...

The galaxy, located in the constellation Leo, is about the same size as a star cluster within the Milky Way and is about the ...

The Milky Way's four observable satellites fit within that range. The study also revealed that host galaxies with large satellites, similar in size to the Milky Way's massive LMC and SMC galaxies ...

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 ...

Astronomers are celebrating the completion of a 2.5-billion-pixel panoramic picture of the entire Andromeda Galaxy. The team includes several UC Santa Cruz researchers who made significant ...

It has a mass more than 4 million times the mass of the sun crammed into a diameter just about 30 times the sun’s width. The Milky Way is just one of more than 100 billion galaxies in the ...