Documents might help scientists shed light on unexplained phenomena and government secrets, experts said.
Space.com on MSN
China's mysterious Shenlong space plane recently launched on its 4th mission. What is it doing up there?
China's reusable Shenlong space plane launched on its fourth space mission earlier this month. What is it doing in Earth ...
A viral Obama podcast answer about aliens prompted Trump to accuse him of revealing secrets and promise to release UFO files ...
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