... Up close, and personal ......With the Chelyabinsk Meteor

Discussion in 'The Bar' started by Phan Neepack, Nov 6, 2013.

  1. Phan Neepack

    Phan Neepack Well-Known Member

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    This kind of stuff never ceases to fascinate me . . . .


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    What We Now Know About The Chelyabinsk Meteor


    Months after a 62-foot-wide fireball streaked through the morning sky over Chelyabinsk, Russia, scientists are starting to get a handle on the rock's composition, trajectory and impact. Three papers released this week, two in Nature today and one forthcoming in Science tomorrow, reconstruct the event, finding that the superbolide (a bright fireball) was even larger than we previously thought, and that the risk of meteorites of this size hitting the earth may be underestimated.


    The papers confirm that the meteorite was an ordinary chondrite, the same stony rock that Japan's Hayabusa spacecraft recovered from the asteroid Itokawa in 2010. It likely originated from the Flora asteroid family in the main asteroid belt between Mars and Jupiter. (For a refresher on the differences between meteors, meteorites and asteroids, go fuck yourself).


    In the Science paper, a group of researchers visited villages around the meteorite's landing spot and re-traced its trajectory using the dash-cams and security footage that caught it on tape that morning, at sunrise on Feb. 15, 2013. "Directly below the fireball’s path, the shock wave was strong enough to blow people off their feet," they write.
    Some interesting numbers:



    • The meteoroid likely started out being about 19 meters in diameter, around 62 feet, and had a mass of 12,000 to 13,000 tons. It entered the atmosphere at a speed of more than 40,000 miles per hour.
    • The first shock wave formed at 55 miles above the surface.
    • 19 miles above the surface, the meteor peaked in heat and brightness, shining brighter than the sun for people up to 62 miles away. The explosion was equal to about 500,000 - 600,000 tons of TNT.
    • An impact from as long as 4.4 billion years ago created shock veins in the asteroid, making it easier for the rock to break apart.
    • 9,000 to 13,000 pounds of meteorite fell to the ground, including the 1,400 pound fragment found in Lake Chebarkul. More than 75 percent of the rock evaporated.
    • That biggest fragment created a 23-foot-wide hole in the ice covering Lake Chebarkul, which was more than 2 feet thick at the time.


    best footage:
    [video=youtube;nsNPIyxwPlE]http://www.youtube.com/watch?v=nsNPIyxwPlE[/video]






    http://www.popsci.com/article/science/what-we-now-know-about-chelyabinsk-meteor?src=SOC&dom=fb
     
    Last edited: Nov 6, 2013
  2. Gitfiddle

    Gitfiddle Live Deliciously

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    Please go away.
     
  3. Phan Neepack

    Phan Neepack Well-Known Member

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    Accept my scrotum in your mouth, first
     
  4. Stew Nod

    Stew Nod Hello VIP

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    hell of a blast...wish they had better footage of the impact
     
  5. Daveindiego

    Daveindiego Confirmed Internet Legend Gold

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    Thank you for posting this information, I found it to be very interesting. :grad:
     
  6. Diogenes1

    Diogenes1 VIP Extreme Gold

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    people and their shitty grasp of videography
     
  7. Just Peachy

    Just Peachy VIP Extreme Gold

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    I like how the article says to "go fuck yourself" if you need a refresher on the objects. :jj: