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NASA is spending billions.............

NASA is spending billions of dollars to figure out how to go to Mars and a 13 year old corrects what you would think is an "easy" problem. Go figure.



BERLIN (AFP) - A 13-year-old German schoolboy corrected NASA's estimates on the chances of an asteroid colliding with Earth, a German newspaper reported Tuesday, after spotting the boffins had miscalculated.

Nico Marquardt used telescopic findings from the Institute of Astrophysics in Potsdam (AIP) to calculate that there was a 1 in 450 chance that the Apophis asteroid will collide with Earth, the Potsdamer Neuerster Nachrichten reported.

NASA had previously estimated the chances at only 1 in 45,000 but told its sister organisation, the European Space Agency (ESA), that the young whizzkid had got it right.

The schoolboy took into consideration the risk of Apophis running into one or more of the 40,000 satellites orbiting Earth during its path close to the planet on April 13 2029.

Those satellites travel at 3.07 kilometres a second (1.9 miles), at up to 35,880 kilometres above earth -- and the Apophis asteroid will pass by earth at a distance of 32,500 kilometres.

If the asteroid strikes a satellite in 2029, that will change its trajectory making it hit earth on its next orbit in 2036.

Both NASA and Marquardt agree that if the asteroid does collide with earth, it will create a ball of iron and iridium 320 metres (1049 feet) wide and weighing 200 billion tonnes, which will crash into the Atlantic Ocean.

The shockwaves from that would create huge tsunami waves, destroying both coastlines and inland areas, whilst creating a thick cloud of dust that would darken the skies indefinitely.

The 13-year old made his discovery as part of a regional science competition for which he submitted a project entitled: "Apophis -- The Killer Astroid."




As an aside, 1 in 450 sounds like pretty good odds. Or bad for us which ever way you want to look at it.
 
http://en.wikipedia.org/wiki/99942_Apophis

NASA denies this, the the estimate has been shown to be incorrect--

Plus, at least on first glance, the 1 in 450 figure is a conditional probability, give that the Apophis hits an Earth satellite on one pass. The overall probability seems small, given the chance of hitting a satellite in the first place.
 
Could this denial simply be another government cover-up of impending disaster? Big brother still denies the existence of extraterrestrial life.
 
That whole story sounds like typical badly reported sensationalism (or the plot for a bad Hollywood sci-fi movie). Most of the numbers seem either 1. made up or 2. just plain wrong.

40000 satellites orbiting the earth? I don't think so. It's more like 4000 unless they are counting every thing the size of a walnut up and then I don't think a 200 billion tonne asteroid hitting one of them will deflect it's path much!

Simon
 
That whole story sounds like typical badly reported sensationalism (or the plot for a bad Hollywood sci-fi movie). Most of the numbers seem either 1. made up or 2. just plain wrong.

40000 satellites orbiting the earth? I don't think so. It's more like 4000 unless they are counting every thing the size of a walnut up and then I don't think a 200 billion tonne asteroid hitting one of them will deflect it's path much!

Simon

First, they do count smaller pieces, not just entire satellites. Many satellites have disintegrated into smaller, but nevertheless sizable junks.

Second, imagine what happens when a bullet hits a person. So, it is entire conceivable that a collision with a satellite will deflect an asteroid such that its trajectory is sufficiently changed a few years later. It takes only a minute deflection.

Best - MM
 
First, they do count smaller pieces, not just entire satellites. Many satellites have disintegrated into smaller, but nevertheless sizable junks.

Second, imagine what happens when a bullet hits a person. So, it is entire conceivable that a collision with a satellite will deflect an asteroid such that its trajectory is sufficiently changed a few years later. It takes only a minute deflection.

Best - MM

Nothing much happens when a bullet hits a person. The Hollywood image of someone being shot and flung backwards across a room is wrong. It's all to do with momentum. If the person being shot gets thrown backwards then the person firing the weapon would also be thrown backwards. Even with a high powered rifle the recoil is manageable and the person being shot isn't going experience more force than the person doing the firing.

The amount of deflection of that asteroid weighing 200 billion tonnes hitting something a few 10s of mm across weighing in the order of tens of grams is going to be practically nothing. Also they don't know how it could hit it. Even if it is deflected how can they say it is deflected into the Earth? It can just as easily be deflected away.

To make a bold statement like "If the asteroid strikes a satellite in 2029, that will change its trajectory making it hit earth on its next orbit in 2036" is just bad reporting and wrong.

Simon
 

Doc4

Stumpy in cold weather
Staff member
"There's a 1 in 450 chance that the sky is falling!!"

"There's a 1 in 450 chance that the sky is falling!!"

"There's a 1 in 450 chance that the sky is falling!!"
 
What I find really hilarious is the title "NASA is spending billions....." then immediately underneath is "Tanksfurnutin!" That combination is priceless! :lol:
 
Sorry to burst everybody's bubble on this, but this is posted on NASA's website:
Dwayne Brown
Headquarters, Washington
202-358-1726
[email protected]

April 16, 2008

RELEASE : 08-103


NASA Statement on Student Asteroid Calculations


WASHINGTON -- The Near-Earth Object Program Office at NASA's Jet Propulsion Laboratory in Pasadena, Calif., has not changed its current estimates for the very low probability (1 in 45,000) of an Earth impact by the asteroid Apophis in 2036.

Contrary to recent press reports, NASA offices involved in near-Earth object research were not contacted and have had no correspondence with a young German student, who claims the Apophis impact probability is far higher than the current estimate.

This student's conclusion reportedly is based on the possibility of a collision with an artificial satellite during the asteroid's close approach in April 2029. However, the asteroid will not pass near the main belt of geosynchronous satellites in 2029, and the chance of a collision with a satellite is exceedingly remote.

Therefore, consideration of this satellite collision scenario does not affect the current impact probability estimate for Apophis, which remains at 1 in 45,000.


- end -

It looks like this might be one for Snopes.
 
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