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LCROSS
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Lunar Crater Observation and Sensing Satellite (LCROSS)
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Lunar Crater Observation and Sensing Satellite (LCROSS)
Lunar Crater Observation and Sensing Satellite (LCROSS) Artist's rendition of the Lunar Crater Observation Sensing Satellite (LCROSS) approaching the surface of the Moon on October 9, 2009.

LCROSS

United States spacecraft
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Also known as: Lunar Crater Observation and Sensing Satellite
Written by
Erik Gregersen
Erik Gregersen is a senior editor at Encyclopaedia Britannica, specializing in the physical sciences and technology. Before joining Britannica in 2007, he worked at the University of Chicago Press on the...
Erik Gregersen
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Lunar Crater Observation and Sensing Satellite
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LCROSS, U.S. spacecraft that was deliberately crashed into the Moon on October 9, 2009, resulting in the discovery of subsurface water. LCROSS was launched on June 18, 2009, from Cape Canaveral, Florida, on an Atlas rocket that also carried the Lunar Reconnaissance Orbiter (LRO), a spacecraft designed to map the surface of the Moon. LCROSS remained attached to the 2.2-ton Centaur upper stage of the Atlas rocket and flew by the Moon on June 23. It and the Centaur upper stage entered an orbit in which they completed one revolution around Earth in approximately 36 days. On October 8 the ...(100 of 213 words)

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