retired Optical · United States

Kepler Space Telescope

NASA · operator profile

The mission that turned exoplanet detection from a handful of discoveries into a statistical science, confirming thousands of planets and reshaping estimates of how common planets are across the galaxy.

Facts

Launch date
7 March 2009
Primary mirror
0.95 m single mirror
Location
Earth-trailing heliocentric orbit (retired)
Timeline
Launched 7 March 2009; found thousands of confirmed exoplanets via the transit method before running out of fuel; retired 30 October 2018.

Frequently asked about Kepler Space Telescope

Who operates Kepler Space Telescope?
Kepler Space Telescope is operated by NASA.
Is Kepler Space Telescope operational?
No — Kepler Space Telescope is retired. Launched 7 March 2009; found thousands of confirmed exoplanets via the transit method before running out of fuel; retired 30 October 2018.
Where does Kepler Space Telescope operate from?
Kepler Space Telescope operates from Earth-trailing heliocentric orbit (retired), observing primarily in the optical range.