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Missions to come
One of the biggest upcoming asteroid threats found is from 500-yard wide "1999 RQ36." It has a 1 in 2,400 chance of impacting Earth in the late 22nd century. NASA plans to send the OSIRIS-REx to land on the asteroid and take samples for further study. It is expected to launch in 2016, arrive in 2018, and work until 2021, then return to Earth with its findings and samples. Above is the sample collector.