The Bennu asteroid samples onboard OSIRIS-REx are about to face the bumpiest part of their journey back from deep space.
. However, as the spacecraft approaches Earth, NASA will wake up a number of OSIRIS-REx's systems in preparation for the Bennu sample container's plunge through the atmosphere.
If all goes according to plan the OSIRIS-REx return capsule will separate from the spacecraft to begin its solo descent down to the Utah desert at 6:42 a.m. EDT from an altitude of about 63,000 miles above Earth.
The return capsule, with the Bennu sample onboard, should reach Earth's upper atmosphere approximately four hours after spacecraft separation, at 10:42 a.m. EDT . As it encounters the thinnest parts of the planet's protective blanket, the capsule will be traveling faster than 27,000 miles-per-hour .
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