The number 40,000 might not sound particularly dramatic, but it represents humanity's growing catalog of near-Earth asteroids ...
The asteroids are as large as around 75 and 91 feet in diameter, according to the Center for Near Earth Object Studies.
Humanity has collected samples from three asteroids: the stony type, Itokawa, and the carbonaceous Ryugu and Bennu. Carbonaceous asteroids are the largest class, so it wouldn’t be too surprising that ...
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