The Kepler Space Telescope: The equivalent of keeping your gaze steady on a grain of salt from a quarter mile away
From nasa.gov: Image credit: NASA Ames/Wendy Stenzel For four years, the Kepler spacecraft continuously and simultaneously observed and collected data on more than 150,000 stars. Its mission: to determine if Earth-size planets orbiting in the habitable zone of stars like our sun are common or rare. The stability of Kepler’s pointing is measured in degrees, […]