 |  Laser beam from the Moon to Earth
 7 March 2014
By the time the signal is analysed by scientists at DLR, it will have travelled roughly
400,000 kilometres and passed through Earth’s atmosphere. The signal was
transmitted by the Lunar Lasercom Space Terminal (LLST) on board the NASA
spacecraft Lunar Atmosphere and Dust Environment Explorer (LADEE), which has been
orbiting the Moon since October 2013. This is the first time that an optical link has
been analysed after a long passage through space.
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