Add Yahoo as a preferred source to see more of our stories on Google. The Andromeda galaxy helped Edwin Hubble settle a great debate in astronomy. Stocktrek Images via Getty Images A hundred years ago ...

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 ...

What new methods can astronomers develop to image distant galaxies while enabling them to learn about their stars and other celestial objects? This is what a recent study published in Astronomy and ...

- Lagoon Nebula (M8) is an emission nebula in Sagittarius.

Since it launched into space on April 24, 1990, the Hubble Space Telescope has been an invaluable instrument to astronomers in unraveling the mysteries of the universe. As it orbits the Earth from 340 ...

This article was originally featured on The Conversation. A hundred years ago, astronomer Edwin Hubble dramatically expanded the size of the known universe. At a meeting of the American Astronomical ...

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 ...