A 20 million ton asteroid is currently hurtling through space at 23,000 miles per hour, on a collision course with Earth. But fear not – Nasa has 25 years to stop it.
Near earth objects
December 10, 2010
NEOs (Near earth objects) are comets and asteroids that have been nudged by the gravitational attraction of nearby planets into orbits that allow them to enter the Earth’s neighborhood.
via pdviz
