Technology & Science

NASA's Osiris-Rex sets record by entering orbit around tiny asteroid

A NASA spacecraft has gone into orbit around an ancient asteroid, setting a record for orbiting the smallest celestial body ever. The OSIRIS-REx spacecraft entered orbit around the asteroid Bennu, some 110 million kilometres from Earth, on Monday.

Bennu — some 110 million kilometres from Earth — is just 500 metres across

The OSIRIS-REx spacecraft is seen in an undated NASA artist rendering. (NASA/Reuters)

A NASA spacecraft has gone into orbit around an ancient asteroid, setting a pair of records.

The OSIRIS-REx spacecraft entered orbit Monday around the asteroid Bennu, some 110 million kilometres from Earth. It's the smallest celestial body ever to be orbited by a spacecraft. Bennu is just 500 metres across.

The spacecraft's laps are barely just over a kilometre above the asteroid's surface, another record.

OSIRIS-REx arrived at Bennu in early December and flew in formation with it until the latest manoeuvre. The goal is to grab gravel samples in 2020 for return to Earth in 2023.

The New Year's Eve milestone occurred just hours before another NASA explorer, New Horizons, was set to fly past an icy space rock beyond Pluto.

The asteroid Bennu is shown in this Nov. 16, 2018 image provided by NASA. After a two-year chase, NASA's OSIRIS-REx arrived at the ancient asteroid in early December, its first visitor in billions of years. (NASA/Goddard/University of Arizona via AP)

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