3hon MSN
A 500-foot- wide space rock could inflict mass casualties across a state or a small country; those arrive every 20,000 years.
We can see this in modern technologically driven fears such as UFOlogy. Some hard-core believers in UFOs are not only ...
Leading British scientist Dame Maggie Aderin-Pocock says that we must not be alone in the universe and that it is 'human ...
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