Missions
Flagship scientific spacecraft — past, present, and planned.
Nancy Grace Roman Space Telescope
PlannedA 100x wider Hubble for dark-energy and exoplanet surveys
Space TelescopeLaunches 2027
NASA
James Webb Space Telescope
OperationalInfrared eyes at the second Lagrange point
Space TelescopeLaunched 2021
NASA / ESA / CSA
Spitzer Space Telescope
RetiredSixteen years in the infrared
Space TelescopeLaunched 2003
NASA
Chandra X-ray Observatory
OperationalThe sharpest X-ray eyes ever flown
Space TelescopeLaunched 1999
NASA
Compton Gamma Ray Observatory
RetiredThe gamma-ray sky's first long-duration eye
Space TelescopeLaunched 1991
NASA
Hubble Space Telescope
Operational35 years above the atmosphere
Space TelescopeLaunched 1990
NASA / ESA
Voyager 1
En RouteThe farthest human-made object from Earth
Interstellar ProbeLaunched 1977
NASA
Voyager 2
En RouteThe only spacecraft to visit all four giant planets
Interstellar ProbeLaunched 1977
NASA