NASA’s OSIRIS-REx mission uncovered a cosmic connection between asteroid Bennu and Earth’s Searles Lake. Both contain minerals formed by evaporating salty water, hinting that Bennu’s parent body once ...
22, 2032, triggering planetary defense groups at the United Nations. Bennu is a medium-sized asteroid. According to NASA, Bennu is about one-third of a mile (half a kilometer) wide at its equator.