In the heart of our Milky Way galaxy, two gigantic "bubbles" extend roughly 50,000 light-years above and below the galactic ...

It points straight at a fuzzy patch that, under the darkest skies though more likely through binoculars, looks like what it is—a very large and very close galaxy. Also called M31—and our ...

The Bullseye galaxy earned its nickname thanks to its wild number of rings. A smaller galaxy shot through its heart 50 ...

Scientists have created the first-ever 3D maps of star-forming molecular clouds near the Milky Way's supermassive black hole, ...

Marel is a scientist at the Space Telescope Science Institute in Baltimore. "Even though our galaxy, as well as the Andromeda galaxy, has 100 billion stars in it, they're very far apart." ...