Experts say there is no risk of the asteroid, which is estimated to be 11.5ft to 28ft across, smashing into Earth.

Asteroid size of truck to pass Earth in one of closest approaches ever recorded

In scenes that wouldn't be out of place in a sci-fi film plot, scientists will attempt to knock the space rock 'like running a golf cart into a Great Pyramid'.

NASA to smash spacecraft into asteroid to test Earth's defence

The scan of the object will begin on Wednesday, with astronomers using four different radio frequency bands. It will last around 10 hours.

Interstellar asteroid scanned for alien technology

Nasa has been forced to deny claims that a devastating asteroid will strike Earth next month.

Nasa denies asteroid will strike Earth next month

An asteroid the size of a small office block will narrowly avoid Earth this evening. 

Astronomers track near-earth asteroid

An asteroid the size of a small office block will pass Earth tonight in one of the closest 'near-misses' in recent history.  

'Near-miss' Asteroid heads for Earth

A 45 metre-long asteroid is set to pass closer to the Earth than any other near miss on record, according to NASA.

Asteroid

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