2nd LD: NASA mission touches down on asteroid Bennu to collect sample

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WASHINGTON, Oct. 20 (Xinhua) -- NASA said its Origins, Spectral Interpretation, Resource Identification, Security-Regolith Explorer (OSIRIS-REx) mission touched down on asteroid Bennu on Tuesday and collected a sample from the asteroid's surface.

It is the first U.S. mission to retrieve a pristine sample of an asteroid and return it to Earth for further study.

The van-size spacecraft briefly touched down its arm in a landing site on Bennu called Nightingale. Later, the spacecraft completed a back-away burn, and moved to a safe distance away from Bennu, according to NASA live broadcast.

"Sample collection is complete," NASA tweeted. After a Touch-And-Go maneuver to capture a sample, the spacecraft fired its thrusters to back away from Bennu's surface and navigate to a safe distance away, said NASA.

Preliminary data show the sample collection event went as planned, said the mission team, adding more details are expected once all the data from the event are downlinked to Earth.

The sample is scheduled to be returned to Earth in September 2023.

OSIRIS-REx was launched on Sept. 8, 2016 and arrived at Bennu on Dec. 3, 2018. Enditem

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