In October 2020, engineers landed a spacecraft on an asteroid 200 million miles (320 million km) from Earth and collected a rocky sample from its surface. But that wasn’t even the hardest part. Now the OSIRIS-REx spacecraft is on its way back to Earth to drop off that sample, with NASA rehearsing the smoothest way to…
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Source : Contamination Prevention Is Key as NASA Preps for Incoming Asteroid Samples
