This pair of galaxies is currently in the process of colliding and merging into one, a process that will take around a billion years. Two of the world's most powerful space telescopes have spied a ...

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 ...

The two keys to Edwin Hubble's breakthrough discovery were forged by others in the 1910s. The first key, the period-luminosity scale discovered by Henrietta Leavitt, allowed astronomers to ...

A new image from the Hubble Space Telescope captures IC 3225 with a comet-like tail of gas streaming from the galaxy's central disk as it travels speedily past its galactic neighbors. "The scenes ...

The first major optical telescope in space, NASA’s Hubble Space Telescope is most famous for the iconic and beautiful images it has brought us of distant galaxies. Hubble’s launch in 1990 was ...