Mission Archive

2 missions found

Reset

Kepler

Completed

NASA · 2009

Heliocentric orbit

A NASA space telescope that watched for the slight dimming of stars as planets crossed in front of them, discovering more than 2,600 exoplanets.

Spitzer

Completed

NASA · 2003

Heliocentric orbit

The last of NASA's Great Observatories, an infrared telescope that trailed the Earth around the Sun for 16 years. It studied young stars, distant galaxies and exoplanets, including the seven Earth-sized planets of TRAPPIST-1.