Deep-Space Photos: Hubble's Greatest Hits

The Hubble Telescopes Greatest Hits
The legendary space telescope celebrates its 20th year in orbit
STScI / NASA / Corbis

Deep Field View
In 1995, the telescope peered into a tiny spot in the sky for ten days, which surprisingly revealed the existence of at least 10,000 galaxies, some billions of light years away. This is the deepest visible light image ever made.

Get the Latest Photos from Time.com
Get TIME photos and pictures of the week delivered directly to your inbox.