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Earth narrowly missed a collision with an asteroid three times the size of FedEx Field. Although 2 million miles crossed between the fate of humankind and the mass of space rock, the threat from asteroids is real.
This week, NASA invited the public to take part in the journey to the asteroid Bennu.
Greg Redfern picks the Chelyabinsk Airburst Event as his top space story of 2013.
One week ago, astronomers Gennady Borisov and Timur Kryachko discovered an asteroid (a space rock) using an 8-inch astrograph (a sophisticated telescope camera) at the Crimean Astrophysical Observatory.
NASA is hosting a live forum Tuesday morning to share their plans to capture an asteroid, in addition to other asteroid-related topics.
On Friday, the 1.7-mile-wide space rock 1998 QE2 will harmlessly fly by Earth at a distance of 3.6 million miles at 4:59 p.m. EDT.
An asteroid more than 1½ miles long will zoom past Earth this week from a far-off distance.
An asteroid is headed towards Earth -- and while astronomers say we're not in any danger, we won't have a good view from North America to see the asteroid pass over the planet.
Richard Berendzen, director of NASA's Space Grant Consortium for D.C., says there's no chance an asteroid could catch astronomers off guard.