When asteroid 2004 BL86 passed near Earth on January 26, it wasn't alone. A small moon came along for the ride.
Asteroid 2012 DA14, thought to be about 45 meters in diameter, passed within 17,200 miles of Earth today.
Researchers have now spotted more than 90 percent of the so-called "planet buster" asteroids in nearby orbits and none poses a threat to Earth. But thousands of midsize bodies remain to be found.
Slooh.com will broadcast the passing of Near-Earth Asteroid 2000 EM26 as the Olympics take place in Russia. Almost a year to the day, a different asteroid slammed into that country's town of Chelyabinsk.
NASA camera snaps image of the potentially hazardous near-Earth object known as 1998 KN3 as it makes its way past the Orion Nebula.
With its small telescope, the Near-Earth Object Surveillance Satellite is looking for space rocks that could devastate our planet.
Scientists estimate there are around 500,000 near-Earth asteroids the size of 2012 DA14, and less than 1 percent have been discovered.
Deep Space Industries has said that it will have prospecting ships mining asteroids near Earth in the very near future.