NASA / SCIENCE PHOTO LIBRARY NASA / SCIENCE PHOTO LIBRARY
Kepler space telescope mirror. Technician examining the honeycomb structure of the Kepler space telescope primary mirror. The NASA Kepler Mission is designed to discover Earth-like planets orbiting other stars. A 0.95 metre diameter telescope called a photometer will scan 100,000 stars in the Milky Way for evidence of Earth-sized terrestrial planets that transit the star's path. The mission was launched on March 7th, 2009, and will orbit the Sun for at least 3.5 years. The mission is named in honour of German astronomer Johannes Kepler.
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