Holograms Heading to the International Space Station

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Screenshot from NASA Testing Project Sidekick video. NASA

NASA has released a new video of a test flight in its Weightless Wonder jet, which simulates weightlessness when the jet freefalls to Earth. This isn't just for fun, though: the ethereal, free-floating passengers are equipped with some unassuming glasses that could revolutionize life on Earth, in space, and maybe even on Mars.