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After 2bn km space journey, NASA craft reaches ancient asteroid | NASA News

After a two-year chase, a NASA spacecraft has arrived at the ancient asteroid. The robotic explorer Osiris-Rex on Monday pulled within 19km of the diamond-shaped space rock , Bennu on December 31. No spacecraft has ever orbited such a small cosmic body. It is the first attempt to collect asteroid samples for return to Earth, something only Japan has come …

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