Hubble went on to discover the expanding universe where galaxies are rushing away from us, but it has long been known that M31 is moving toward the Milky Way at about 250,000 miles per hour.

The Hubble Space Telescope may have captured our Milky Way galaxy being a bit of a bully.

A story of survival is unfolding at the outer reaches of our galaxy, and NASA's Hubble Space Telescope is witnessing the saga.

The Hubble Space Telescope captured a stunning view of the Milky Way's core 27,000 light-years away. The stunning footage was published to YouTube on May 3, and features an in-depth glimpse at the ...

Hubble wrote about his discovery to Harlow Shapley, who had argued that the Milky Way encompassed the entire universe. "Here is the letter that destroyed my universe," Shapley remarked.

A century ago, humans didn't know other galaxies existed. Here's how Edwin Hubble changed that view.

Hubble Space Telescope image of NGC 346, a star cluster located within the Small Magellanic Cloud, which is one of the Milky Way's nearest neighbors at only about 200,000 light-years from Earth.

One large Milky Way galaxy or many galaxies? 100 years ago, a young Edwin Hubble settled astronomy’s "Great Debate" ...

The Hubble Space Telescope may have captured our Milky Way galaxy being a bit of a bully.

Hubble’s work pushed the field of astronomy forward, starting with his paper demonstrating that some objects exist outside our galaxy.