Billions of stars fill our galaxy that become visible at certain times of year. And in the U.S., that time, known as "Milky ...

The oldest stars in the Milky Way are forcing a fresh look at one of cosmology’s biggest arguments. If some of them are about ...

The Andromeda galaxy helped Edwin Hubble settle a great debate in astronomy. Stocktrek Images via Getty Images A hundred years ago, astronomer Edwin Hubble dramatically expanded the size of the known ...

Give them a constellation prize. A group of international scientists discovered three ultra-massive “Red Monster” galaxies capable of forming their own stars faster than the average nebula. The ...

A hundred years ago, astronomer Edwin Hubble dramatically expanded the size of the known universe. At a meeting of the American Astronomical Society in January 1925, a paper read by one of his ...

Milky Way season is here, bringing clearer views of our galaxy. Here's how to see it from Nevada.

For decades, astronomers wondered why most nearby galaxies are speeding away from the Milky Way instead of being pulled in by its gravity. New simulations reveal the answer: our galaxy sits in a ...

Astronomers captured this stunning image of the Milky Way’s center, revealing a web of gas, dust and stars in extraordinary detail ...

Arizona stargazers can see the Milky Way without special equipment. Learn when and where to spot our galaxy's bright center.