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Originally posted by Lookingup
Here is its evil twin, 99942 Apophis, slated for a possible encounter in 2029.
In this link, Neil deGrasse Tyson gives the scenario of what could be.
Neil deGrasse Tyson on the end of the world
...and most people are utterly clueless.
On October 26, 2028, the near-Earth asteroid 1997 XF11 will make a close approach to Earth. Although initial reports indicated an extremely close passage, the current analyses predict an approach distance of 0.00636 AU (951,000 km, 591,000 mi) or about 2.5 times farther than the moon. The probability that the asteroid will impact the Earth is effectively zero. (See JPL's press release.)
Originally posted by pjslug
Some say this one mile wide asteroid will only come within 600,000 miles of the Earth. That is less than three moon distances from the Earth. Very close.
[edit on 2/28/2009 by pjslug]