Bennu has a diameter of roughly 500 meters (1,640 feet) and has a 1 in 2,700 chance of hitting our planet in September 2182.
A papyrus scroll carbonised by the eruption of Mount Vesuvius two millennia ago is slowly being read once again thanks to ...
"When people find out about that they're going to say 'who put that there?'," Buzz Aldrin once said of the monolith.
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