Hubble Space Telescope 25th Anniversary Medallion
![Hubble Space Telescope 25th Anniversary Medallion Hubble Space Telescope 25th Anniversary Medallion](https://nasa3d.arc.nasa.gov/shared_assets/models/hubble-medallion/3d-medallion-428x321.gif)
On April 25, 1990, astronauts aboard the Space Shuttle Discovery deployed the Hubble Space Telescope into Earth orbit, and launched a new era of astronomical discovery. Now, 25 years later, we celebrate a remarkable milestone for a space observatory whose ground-breaking investigations have brought revolutionary changes in our understanding from planets, stars, nebulae, and galaxies to the very frontiers of the cosmos.