There is a nonzero chance that somewhere in the nearby solar system is a rock that might kill us all. This stony assassin may well be orbiting the sun at this very moment, careening down a ...

The Near-Earth Object Surveyor is a $1.4-billion infrared telescope with a single mission: to hunt asteroids and comets that could pose a danger to Earth. Astronomers have already identified ...

Nasa says there is a small chance a recently spotted asteroid could collide with the Moon. Studying it can inform our understanding of the Earth's past and our future. Each year, according to Nasa ...

‘Small’ asteroids the size of buses or stadiums have been pinpointed between Mars and Jupiter for the first time. Scientists used a new method of tracking the space rocks, which could one day ...

The space-borne infrared telescope, to be housed in the enclosure at left, will look for large asteroids and comets that could threaten Earth. (Myung J. Chun / Los Angeles Times) ...

Astronomers believe that 14,000 undiscovered near-Earth objects like asteroids, large enough to cause damage, could be in space. Recently, NASA was tracking a large asteroid flying past Earth ...

NASA's Center for Near Earth Object Study tracks asteroids, comets and other objects. "Satellites have an orbit that is defined mathematically," said Beatty. "If you run the numbers backward and ...