Optical PAyload for Lasercomm Science (OPALS) Flight System hardware. Image is credited to NASA/JPL-Caltech.
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NASA Uses Laser To Beam “Hello, World!” Video From ISS

NASA successfully beamed a high-definition video 260 miles from the International Space Station to Earth Thursday using a new laser communications instrument. Transmission of “Hello, World!” as a video message was the first 175-megabit communication for the Optical Payload for Lasercomm Science (OPALS), a technology demonstration that allows NASA to test methods for communication with […]