From July, inspecting the OSIRIS-REx spacecraft at NASA's Kennedy Space Center. Credit: NASA.

OSIRIS-REx lifts off aboard an Atlas V rocket. After a minute, it goes supersonic. After 90 seconds, it reaches peak stress due to the combination of velocity and remaining atmosphere. At two minutes, it is going 2,500 miles per hour, weighs half what it did at liftoff, and is headed for space.

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