Laser Beams Reflected Between Earth and Moon Boost Science

This photograph shows the laser-ranging facility at the Goddard Geophysical and Astronomical Observatory in Greenbelt, Md. The facility helps NASA keep track of orbiting satellites. Both beams shown, coming from two different lasers, are pointed at NASA’s Lunar Reconnaissance Orbiter, which is orbiting the Moon. (Credits: NASA)

by Lonnie Shekhtman
NASA’s Goddard Space Flight Center

GREENBELT, Md. — Dozens of times over the last decade NASA scientists have launched laser beams at a reflector the size of a paperback novel about 240,000 miles (385,000 kilometers) away from Earth. They announced today, in collaboration with their French colleagues, that they received signal back for the first time, an encouraging result that could enhance laser experiments used to study the physics of the universe.

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Happy 40th Birthday, Lunokhod!

ROSCOSMOS PRESS RELEASE

From Lunokhod to Selenokhod

On Nov. 17, we will celebrate one of the most outstanding achievements in the Russian space program. Lunokhod-1 reached the Moon 40 years ago.

Lunokhod 1 was the first of two unmanned lunar rovers landed on the Moon by the Soviet Union as part of its Lunokhod program. The spacecraft which carried Lunokhod 1 was named Luna 17. Lunokhod was the first roving remote-controlled robot to land on another celestial body.

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