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Asteroid may hit Mars in next month

Sat Dec 22, 2007, 10:06 AM
  • Reading: Yahoo! News
By ALICIA CHANG, AP Science Writer
Fri Dec 21, 5:34 PM ET

[link]

LOS ANGELES - Mars could be in for an asteroid hit. A newly discovered hunk of space rock has a 1 in 75 chance of slamming into the Red Planet on Jan. 30, scientists said Thursday.

"These odds are extremely unusual. We frequently work with really long odds when we track ... threatening asteroids," said Steve Chesley, an astronomer with the Near Earth Object Program at NASA's Jet Propulsion Laboratory.

The asteroid, known as 2007 WD5, was discovered in late November and is similar in size to an object that hit remote central Siberia in 1908, unleashing energy equivalent to a 15-megaton nuclear bomb and wiping out 60 million trees.

Scientists tracking the asteroid, currently halfway between Earth and Mars, initially put the odds of impact at 1 in 350 but increased the chances this week. Scientists expect the odds to diminish again early next month after getting new observations of the asteroid's orbit, Chesley said.

"We know that it's going to fly by Mars and most likely going to miss, but there's a possibility of an impact," he said.

If the asteroid does smash into Mars, it will probably hit near the equator close to where the rover Opportunity has been exploring the Martian plains since 2004. The robot is not in danger because it lies outside the impact zone. Speeding at 8 miles a second, a collision would carve a hole the size of the famed Meteor Crater in Arizona.

In 1994, fragments of the comet Shoemaker-Levy 9 smacked into Jupiter, creating a series of overlapping fireballs in space. Astronomers have yet to witness an asteroid impact with another planet.

"Unlike an Earth impact, we're not afraid, but we're excited," Chesley said.

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On the Net:

Near Earth Object Program: [link]

Meteor Crater in Arizona: [link]

Images Of Meteor Crater: [link]

Devious Comments

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:iconla-puce:
Happily we are not living on Mars...

:holly::rudolph:Merry Xmas!:holly: :santa:

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( O.o)
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Le coeur à des raisons que la raison ne connait pas.
:iconprimavera83:
Although the meteor crater in Arizona, USA, that was formed from a small asteroid about 80 feet in diameter, impacted the Earth between 20,000 to 50,000 years ago, we are not away from the danger.

As mentioned in the article "object that hit remote central Siberia in 1908, unleashing energy equivalent to a 15-megaton nuclear bomb and wiping out 60 million trees.". The explosion was at an altitude roughly six kilometers in the atmosphere, some people died (don't know the real number), though. Luckily, it didn't hit a populated area (at that time).

Thanks for your comment :)

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Some may think I'm obsessed with my cat. What's wrong with dat?! I love her, u don have to! U don have 2 be obsessed with anything, dat's ur business! Just don think u've got da right 2 force people 2 think the way u do!
:iconla-puce:
Woh ! I know that one day our world will desapear... Don't want to see that ! :nod:

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( O.o)
( >< )0 [link]
Le coeur à des raisons que la raison ne connait pas.
:icondahermit:
Poor Martians ;)

The Siberian one makes for fascinating reading. With the world being more populated, and large urban conurbations being spread fairly well, another similar one could well kill millions :(

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:iconprimavera83:
Very True!

As we all know, many geologists and paleontologists now believe that the extinction of dinosaurs 65 million years ago was caused by the impact of a huge asteroid (6 to 12 miles wide) along with at least 50% of all species then living on Earth. Ofcourse the heat and dust helped with the extinction of billions of creatures too.

I searched the internet for the above information, and I also found that the Yucatan region of Mexico was the palce where the impact that killed dinosaurs (known as the K-T event "Cretaceous-Tertiary Mass Extinction event") happened.

For more information, please visit:

NASA [link]

Astrobiology Magazine [link]

Chicxulub Crater (Yucatan Peninsula, MExico) [link]


Yeah, poor little green creatures ;) but I think that whatever happens to Mars, we - Earthians - will be affected directly, as Mars is the most similar planet in our solar system to the Earth, what do you think? :)

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Some may think I'm obsessed with my cat. What's wrong with dat?! I love her, u don have to! U don have 2 be obsessed with anything, dat's ur business! Just don think u've got da right 2 force people 2 think the way u do!
:icondahermit:
Yes, that was massive impact, part of it is no under water, so it was only recently discovered to be a crater. One thing we need to consider is this, just how well prepared are we in the developed nations to deal with a disaster on that scale? With our centralised distribution and just in time systems, total lack of any knowledge of wildlife and how to forage, who would stand a better chance of survival, the developed nations or the ones we consider under-developed?

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:iconprimavera83:
That's a good question. I have no idea how well prepared we are. But I believe we are not, one reason is that we have never been hit by an asteroid - hopefully we will never see that day -, you know what I mean. So we have no experience in dealing with such situations. We know better how to deal with earthquakes, tsunamis, volcanic eruptions etc., we have done field surveys, studies and research, statistics, and have got the instrument to predict and then prevent as much loss as possible. While all we have regarding asteroids impacts is assumptions and expectations, no real field studies.

A first step to the solution is NASA's Near-Earth Object Survey Program (NEO)..
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- The goal of the Survey Program should be modified to detect, track, catalogue, and characterize, by the end of 2020, 90 percent of all Potentially Hazardous Objects (PHOs) greater than 140 meters whose orbits pass within 0.05 AU of the Earth's orbit (as opposed to surveying for all NEOs).

- The study team assessed a series of approaches that could be used to divert a NEO potentially on a collision course with Earth. Nuclear explosives, as well as non-nuclear options, were assessed.
****

To read more about the survey, here's the link of NASA's report to the Congress. You can also find a PDF copy of the final report of the survey and a copy of NASA's NEO study.

[link]

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Some may think I'm obsessed with my cat. What's wrong with dat?! I love her, u don have to! U don have 2 be obsessed with anything, dat's ur business! Just don think u've got da right 2 force people 2 think the way u do!
:iconprimavera83:
Oh I forgot to mention that the link I posted in my previous reply contains a summary of NASA's report to the Congress. It's very interesting :thumbsup:

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Some may think I'm obsessed with my cat. What's wrong with dat?! I love her, u don have to! U don have 2 be obsessed with anything, dat's ur business! Just don think u've got da right 2 force people 2 think the way u do!
:icondahermit:
Well, report or no reports, I figure it will go something like this:

Notice of impending strike

Panic!

Strike

Panic!

Society breaks down in affected areas, riots, looting, large numbers of deaths from simple things like polluted water, lack of food.

Poor farmer in some place back of beyond wonders what the hells up with his radio and why he can't get world service any more, and carries on farming and feeding his family, no better or worse off that before, except for the lovely bright sunsets.

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