Spacewatch: Nasa's Osiris-Rex spacecraft orbits asteroid Bennu

The craft is to collect samples of material that reflect the solar system's earliest stages

Nasa's Osiris-Rex spacecraft has achieved orbit around asteroid Bennu. The spacecraft eased into orbit with an eight-second burn of its thruster on 31 December at 19.43 GMT.

Its mission is to survey the small asteroid and then collect a sample of the surface material to send back to Earth for analysis.