The Hubble Space Telescope was preceded by the spies in orbit that looked down at the Earth to spy on other countries. But Hubble instead looks up into space to see the farthest galaxies.
https://youtube.com/shorts/t4GgPxBbPhg?si=5zDLcIolmCh6WLBn
2025-05-01 Dr. Tyson Tells About The Predecessors Of The Hubble Telescope
