Large asteroid to come within 21K miles of earth in Feb. 2013

The thing that bothers me is, NASA's page on this talks about the PROBABILITY that the asteroid will whack us, they don't quite come out saying it WON'T.

2013-Feb-16 00:44 00:10 Moon 0.00274582532035966 0.00260897047648501 0.00289595875366623 6.5497150485791 6.54789247976614 2456339.530959110 10.8870277066342 9922.95321840708 3.59190639934173 51.789880484685 84016.5779613478 T 35 CATAB v2.0c-linF95 2012-May-13 02:58:16 2012-May-13 03:00

http://neo.jpl.nasa.gov/risk/2012da14.html
 
If they get the math wrong, and we all die, they don't want to be blamed.

Even if they have the math right, this far out all it would take would be a rock weighing a few hundred to a couple thousand pounds hitting it to alter it's orbit enough to make it collide with the earth, or miss by even more.

Regardless of whether it hits or not, a 150 foot asteroid (about the size of a half acre lot) colliding with the earth would not be an extinction level event, but it would destroy a city pretty efficiently,
 
Even if they have the math right, this far out all it would take would be a rock weighing a few hundred to a couple thousand pounds hitting it to alter it's orbit enough to make it collide with the earth, or miss by even more.

Regardless of whether it hits or not, a 150 foot asteroid (about the size of a half acre lot) colliding with the earth would not be an extinction level event, but it would destroy a city pretty efficiently,

If that's the case, SEND IT!
 
Regardless of whether it hits or not, a 150 foot asteroid (about the size of a half acre lot) colliding with the earth would not be an extinction level event, but it would destroy a city pretty efficiently,

I wonder what sort of wave (size wise) would be created if it were to hit in the Atlantic or Pacific oceans.
 
I wonder what sort of wave (size wise) would be created if it were to hit in the Atlantic or Pacific oceans.

surfer-babe.jpg
 
And in other news, it looks like another comet is going to make a very close pass by the Sun. From Spaceweather.com 9/26/12:

BIG SUN-DIVING COMET DISCOVERED: Astronomy forums are buzzing with speculation about newly-discovered Comet C/2012 S1 (ISON). Currently located beyond the orbit of Jupiter, Comet ISON is heading for a very close encounter with the sun next year. In Nov. 2013, it will pass less than 0.012 AU (1.8 million km) from the solar surface. The fierce heating it experiences then could turn the comet into a bright naked-eye object.

[snip]

Karl Battams of the NASA-supported Sungrazer Comet Project, [...]lays out [...]possibilities:

"In the best case, the comet is big, bright, and skirts the sun next November. It would be extremely bright -- negative magnitudes maybe -- and naked-eye visible for observers in the Northern Hemisphere for at least a couple of months."
 
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