Chandra is one of the Great Observatories , along with the Hubble Space Telescope , Compton Gamma Ray Observatory ( 1991 -- 2000 ) , and the Spitzer Space Telescope .
Chandra is one of the Great Observatories , with the Hubble Space Telescope , Compton Gamma Ray Observatory ( 1991 -- 2000 ) , and the Spitzer Space Telescope .