US-based space agency NASA has managed to beam a HD video from the International Space Station to Earth using a new laser communications device. The ‘Hello World’ video was the first ever to “travel” via this technology.
The technology used was the Optical Payload for Lasercomm Science (OPALS). It took OPALS 3.5 seconds to transmit the “Hello World!” video – the process would have taken more than 10 minutes to complete using the more traditional downlink process.
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Lucas 2012 Infos 