Dog--
The Freeman
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Look on the bright side, never again will we be invaded by Mars..
With so much trouble plaguing our poor world right now, we could all use a break. Let's dwell on somebody else's misery for a change.
We mean cataclysmic misery. Earth-shattering misery, if it were on Earth.
Fortunately for us, the trouble in question is on Mars.
Look up at the eastern sky this evening and you'll see a bright reddish star staring back at you without blinking or twinkling. That is Mars.
On Jan. 30 at 5:56 a.m., give or take a few minutes, Mars stands a slim but real chance of getting hit by an asteroid the size of a football field, traveling faster than a bullet. That cosmic cannonball packs a punch equal to a 3 megaton nuclear bomb. The impact would dig a crater a half-mile wide and throw that huge gob of Mars high into the Martian sky, according to asteroid watchers at NASA.
The odds of Mars getting hit were put at 1 in 75 last week, but fine-tuning has now upped the odds to only 1 in 25. Most likely, NASA says, further refinement of the asteroid's path will show it narrowly missing Mars. But, the possibility of a catastrophic collision remains real. Fortunately for the Martians, there are no Martians.
So, without any hint of guilt, scientists are rooting for the asteroid and against Mars. Turning part of Mars inside out would give us a peek at what lies beneath the surface of the red planet because it will get kicked up by the asteroid. In short, misfortune for Mars could be a scientific jackpot for science on Earth.
NASA says there is no chance of the asteroid, blandly named 2007 WD5, popping our planet.
But before you feel smug and safe, it's a good bet that when (not if) Earth takes another hit from an asteroid, as it has many times over the ages, we'll never see it coming, or see it too late. That will be nasty. WD5 carries the wallop of the so-called Tunguska object, possibly an asteroid, that exploded over Siberia in 1908, wiping out 60 million trees, according to NASA.
When WD5 was discovered by a NASA-backed telescope near Tucson, Ariz., on Nov. 20, calculations showed that it has already come within 5 million miles of Earth at its nearest approach. Nobody saw it before that.
Efforts are being made to keep track of asteroids that come close to Earth, and if anything, WD5 blasting into Mars could have the benefit of winning support for beefing up Earth's own asteroid early warning system. It needs beefing up. We don't want a bad surprise falling out of the sky on us.
Look on the bright side, never again will we be invaded by Mars..