via https://ift.tt/M8BeAoZ It's the nail-biting end of an ambitious mission.

NASA has achieved many firsts in space. But it's never plucked rocks off an asteroid and flown them back to Earth.

That's set to change on Sunday, Sept. 24. After a seven-year mission traveling to asteroid Bennu, collecting material, and then returning home, … How to watch NASA bring back asteroid specimens to Earth