In the 1920s, astronomers thought that the Milky Way was the entire universe. Hubble's discovery revealed a much bigger ...

In 1920, astronomers Harlow Shapley and Heber Curtis held a Great Debate. Shapley argued that the spiral nebulae were small and in the Milky Way, while Curtis took a more radical position that they ...

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

Astronomers have released the most detailed image of the Andromeda galaxy with new clues about its evolutionary history to celebrate the 100th anniversary of Edwin Hubble's discovery that our ...

His second major discovery also transformed astronomers ... when the universe was 20 times smaller than it is now. Edwin Hubble would be amazed to see such progress.

It might be old, bits of it might go offline with increasing regularity, but Hubble still does cutting edge science as this enormous portrait of Andromeda shows. Pop quiz: how old is the Hubble Space ...