The massive Arecibo Observatory has contributed to many major scientific discoveries over the last 57 years.

The spacecraft Osiris-Rex won't depart Bennu's neighbourhood until March at the earliest, when the asteroid and Earth are properly aligned.

Asteroid 16 Psyche is thought to be the leftover core of a would-be planet that fell apart.

The OSIRIS-REx spacecraft played 'tag' with the surface of the asteroid, snatching a sample of rock in a historic first for NASA.

Instead of a cosmic rock, the newly discovered object appears to be an old rocket from a failed moon-landing mission 54 years ago that's finally making its way back home, according to NASA's leading asteroid expert.

Some astronomers suspect the potential 'mini-moon' was built on Earth many years ago.

NASA says there is only a 0.41 per cent chance that the asteroid will fall to Earth ahead of the U.S. presidential election.

The asteroid passed within 3,000 kilometres of Earth, which is about the distance from Toronto to Vancouver.

The asteroid won't be officially named until NASA confirms its orbit.

Witnesses reported hearing a loud roar after the early-morning meteor lit up the sky over Tokyo.