Astronauts are preparing to rendezvous one last time to refurbish and reboost the venerable Hubble Space Telescope Its a dangerous mission so why is Hubble worth the risk Hubble has been the key ...

The name "blue lurker" might sound like a villainous character from a superhero movie. But it is a rare class of star that NASA's Hubble Space Telescope explored by looking deeply into the open ...

Hubble's contemporary ... realized that the expansion rate could be run back into time—like rewinding a movie—until the universe was unimaginably small, hot and dense. It wasn't until 1949 ...

Hubble and its fellow observatories give us an unprecedented, crystal-clear look at the far reaches of the cosmos. Explore these orbiting pioneers and learn what they've discovered. 3 min read The ...

In this NASA/ESA Hubble Space Telescope image, Hubble once again lifts the veil on a famous — and frequently photographed — supernova remnant: the Veil Nebula. ESA/Hubble & NASA, R.