Lots of people believe in the abstract theory of alien life. But some people believe aliens have not only visited Earth, they actually placed a mysterious device into orbit above our planet thousands ...
Interesting Engineering on MSN
From crystal skulls to hollow moons: 10 science conspiracies that never seem to die
The Hollow Moon idea mixes 1970s speculation about an artificial satellite with a memorable Apollo-era soundbite. After NASA crashed hardware into the Moon for seismic tests, the instruments recorded ...
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