"Before Hubble, no generation ever had access to unimaginably vibrant views of space, stretching almost all the way back to ...

From spellbinding images to groundbreaking scientific discoveries, we look back on some of Hubble's most exciting milestones.

The Hubble Space Telescope has made multiple observations of exoplanet WASP-121 b, also known as Tylos. The extreme temperature changes the massive 'hot Jupiter'-type planet may make it rain iron at ...