An curved arrow pointing right. In 3.75 billion years, Earth's Milky Way Galaxy will collide with the Andromeda Galaxy. Over the next several billion years, the two galaxies will rip each other ...

the most distant of which is more than a million light-years from Earth. That’s almost half the distance to Andromeda. This illustration shows the Milky Way galaxy's inner and outer halos.

There could be as many as 40 billion habitable Earth-size planets in the galaxy, according to a new study. WSJ's Monika Vosough reports.

Black holes are more common than you may think. There’s even one in our galaxy. Close enough for scientists to actually observe its destructive nature. Produced by Kevin Reilly and Rebecca ...

Astronomers have taken a zoomed-in photo of a star outside the Milky Way for the first time, the European Southern Observatory announced in a statement Thursday.

The Goldstone Solar System Radar, part of NASA’s Deep Space Network, made these observations of the recently discovered ...

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

Hubble Space TelescopeHomeNASA's Hubble Sees… Hubble Space Telescope Hubble HomeOverviewAbout HubbleThe History of ...