Category
page 1Great Observatories program
Hubble Space Telescope
NASA and ESA space telescope (launched 1990)
Spitzer Space Telescope
decommissioned NASA infrared space observatory
Chandra X-ray Observatory
NASA space observatory
Compton Gamma Ray Observatory
former NASA space observatory
Great Observatories program
series of space telescopes
Great Observatories Origins Deep Survey
astronomical survey that combines observations from 3 great NASA observatories