U.S. government tracking more than 650 potential UFO cases, Pentagon says

The US government is tracking more than 650 cases of potential UFO cases. (US Navy)

The US government is tracking more than 650 cases of potential UFO cases. (US Navy)

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How the lack of gravity in space impacts astronauts’ brain

What happens to the brain when you take gravity away? According to a new study looking at astronauts both before and after space travel, that experience causes physical changes that researchers believe requires at least three years between longer missions to recover from.

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