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View Diary: BREAKING: Meteor airburst over Chelyabinsk (318 comments)

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  •  According to the real-time NASA tracking page (3+ / 0-)
    Recommended by:
    Not A Bot, rb608, OtherDoug

    closest approach by 2012 DA14 will be at 11:27 AM PST.  The page automatically and constantly updates:

    http://www.nasa.gov/...

    Pour yourself into the future.

    by Troubadour on Fri Feb 15, 2013 at 01:07:30 AM PST

    [ Parent ]

    •  So, at 1:26 p.m. Central, hit the foxholes? (3+ / 0-)
      Recommended by:
      Troubadour, Aunt Pat, bevenro

      On a serious note, amazing videos, especially at the Bad Astronomy site.  Thanks for all the links shared, y'all.  Fascinating.

      The wisdom of my forebears ... Two wise people will never agree. Man begins in dust and ends in dust — meanwhile it's good to drink some vodka. A man studies until he's seventy and dies a fool. Some of my best friends are Catholics, really.

      by Not A Bot on Fri Feb 15, 2013 at 01:17:35 AM PST

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      •  Only if you don't trust scientists. (0+ / 0-)

        Besides, it's a 50 meter object, so even if an impact were 100% certain rather than 100% not, your personal odds of being close enough to even see something let alone be endangered by it would be something like 1 in several million.  There's a bigger danger that people looking at it with telescopes are going to be struck by lightning.

        Pour yourself into the future.

        by Troubadour on Fri Feb 15, 2013 at 02:19:28 AM PST

        [ Parent ]

        •  I trust scientists, to a point (2+ / 0-)
          Recommended by:
          Just Bob, Troubadour

          My youngest daughter is a research physicist (nanotechnology particle energetics something-or-other -- she's a hair under 4'9", and there are family jokes about her field choice) who almost went into astrophysics, and she has many contacts in that field, and she assures me all is well.  However, I wouldn't trust her with a credit card, for good reason.

          As for lightning, I had a great uncle in Arizona who was struck twice, the events separated by several decades.  The first time he was by himself at a gold claim that produced little gold but wonderful quartz crystals by the bucketload, and he came home with scorch marks on his shoulders and on one leg and a boot blown to smithereens.  The second time he was in his back yard, gardening, and a ponderosa next to him was struck and his wife came out to find him dead.  This was before CPR.  She pounded on him anyway, and his heart restarted.  He remembered nothing.  In all likelihood, that second event, it was the shock of the sound or flash that scared him to death, not an actual electric shock.  He was close to 70, and lived another couple decades after.

          In any case, the advent of dash cams and camera phones has certainly helped in the "enjoyment" of being able to see and hear the event in Russia.  Twenty years ago, we'd have been stuck viewing still photos of the afterwards.  Quite an impressive sonic boom.  A couple years before I left Alaska, we had a similar but less damaging event -- a big flash through the curtains and a boom at night -- and I think the rock landed somewhere near Glennallen.  I regret not having been outside to see it.  

          The wisdom of my forebears ... Two wise people will never agree. Man begins in dust and ends in dust — meanwhile it's good to drink some vodka. A man studies until he's seventy and dies a fool. Some of my best friends are Catholics, really.

          by Not A Bot on Fri Feb 15, 2013 at 10:26:15 AM PST

          [ Parent ]

    •  If associated (1+ / 0-)
      Recommended by:
      Troubadour

      You will remember that Comet Shoemaker–Levy 9 broke up and hit Jupiter over the period of several days (16-24 July 1994) so a smaller fragment either broken off from or picked up by the gravitation of 2012 DA14 on its travels seems perfectly feasible.

      We experience similar effects with the Leonid meteor showers although of course these are fragments of a meteor blown off as it approaches the Sun rather than fragmentation/accretion of a rocky asteroid.

      "Who stood against President Obama in 2012?" - The trivia question nobody can answer.

      by Lib Dem FoP on Fri Feb 15, 2013 at 01:22:30 AM PST

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      •  Shoemaker-Levy 9 was a comet. (0+ / 0-)

        But it's true that an asteroid composed of loose material could be prone to lose some of its constituents to tidal forces as it approaches a massive body.  We don't really know what 2012 DA14 is like though, aside from very rough parameters.  

        Pour yourself into the future.

        by Troubadour on Fri Feb 15, 2013 at 02:21:53 AM PST

        [ Parent ]

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