The UN voted last week to form an 'International Asteroid Warning Group' charged with coordinating a global response to a hypothetical asteroid on course to Earth.
The 460-foot wide asteroid 2011 AG5 could be on a collision course with our planet. But the odds are very small, say scientists.
Janice Voss began her NASA career while still a student at Purdue University. Janice Voss was one of six women to fly at least five times on the space shuttle.
Europe is ramping up efforts to detect incoming asteroids. Scientists and astronauts met for the first time in Germany to discuss options for defending the Earth from asteroids.