2012 da14

It was a busy day for planet Earth. Asteroid 2012 DA14, a 45-meter wide space rock, sped past the Earth a mere 17,100 miles overhead. In the Ural mountains of Russia, a 15-meter wide, 7,000 metric ton asteroid hit the Earth's atmosphere, creating a 300-kiloton shock wave that injured more than 1,000 people and shattered 1 million square feet of glass.

What are the odds that an asteroid impact will destroy your being in a given year? Slim -- 1 in 74,817,414, according to data compiled by The Economist. For comparison, the odds of … Read more

The sky is totally falling.

As if it weren't enough that a meteor boomed across the Russian sky today, shattering windows and injuring about 1,000 people, an asteroid 150 feet across is about to sideswipe our planet.

Asteroid 2012 DA14, while unrelated to the meteor, is just as scary. It will graze us at just 17,200 miles from the surface, passing between Earth and our geosynchronous weather and communications satellites.

Possible asteroid strikes are no joke, and if you ask me (or the dinosaurs), they represent the biggest threat to our planet aside from human stupidity.

Fortunately, some non-stupid humans are finally getting serious about countering this threat. … Read more

In less than 24 hours, a 150 foot-wide asteroid will complete a remarkably close, but safe, flyby. For weeks, scientists have been tracking the path of the small near-Earth asteroid known as 2012 DA14, which is on course to swing by the Earth tomorrow at 11:24 a.m. PT.

Again, no need to panic about a collision with Earth, which would be, in a word, catastrophic. If a space rock of this magnitude crashed into us, scientists say, it would release about 2.5 megatons of energy into the atmosphere. The last time an asteroid this size smacked into … Read more

In a few days, sky watchers in Eastern Europe, Asia, and Australia will get a chance to see one big rock hurtling through the heavens. One very big rock. Compared with other asteroids traveling through space, this one may seem a relative pebble -- at half the size of a football field -- but for Earth, it will make for a relatively close call.

"This is a record-setting close approach," says Don Yeomans of NASA's Near Earth Object Program at JPL. "Since regular sky surveys began in the 1990s, we've never seen an object this big get so close to Earth." … Read more