WASHINGTON, DEC 23:
As the ‘Mayan doomsday’ predictions failed to pan out, NASA has come up with more good news — an asteroid feared to be on a collision course with the Earth no longer poses a threat to the planet.
Uncertainties about the orbit of the asteroid, known as 2011 AG5, previously allowed for a less than a 1 per cent chance it would hit the Earth in February 2040, NASA said.
Previously, scientists estimated that the risk of this 140-meter-diameter, about the length of two football fields, asteroid colliding with the Earth was as high as one in 500.
If this object were to collide with the Earth it would have released about 100 megatons of energy, several thousand times more powerful than the atomic bombs that ended...