The folks at NASA have shot an image of the 'Mona Lisa' to and an instrument aboard the agency's Lunar Reconnaissance Orbiter (LRO) some 240,000 miles away.
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"This is the first time anyone has achieved one-way laser communication at planetary distances," MIT's David Smith, head of the spacecraft's Lunar Orbiter Laser Altimeter (LOLA), said in a release.

"In the near future, this type of simple laser communication might serve as a backup for the radio communication that satellites use. In the more distant future, it may allow communication at higher data rates than present radio links can provide."
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Da Vinci's masterpiece was chopped into a 152x200 pixel array, with each pixel assigned a gray-scale value and beamed up one at a time; the image transmission speed was about 300 bits per second. LOLA, all the while following its primary mission of mapping the lunar terrain, put Mona back together based on the arrival times of the pixel data. The 500-year-old image was beamed back to Earth via the LRO's radio telemetry system. Meanwhile, errors caused by turbulence in the atmosphere were cleaned up with Reed-Solomon error correction, a technique used in CDs and DVDs.