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  1. 15 Feb '13 10:14 / 2 edits
    http://phys.org/news/2013-02-meteor-shower-panic-central-russia.html

    the resulting explosions injured at least 250 people.

    watch the video link showing it as it was coming down!
  2. 15 Feb '13 10:18 / 1 edit
    -just noticed googlefudge only just beat me to it -too late to delete my thread.
  3. Standard member sonhouse
    Fast and Curious
    15 Feb '13 11:01
    Originally posted by humy
    -just noticed googlefudge only just beat me to it -too late to delete my thread.
    I was just getting ready to post it also but saw yours! Incredible, eh. Are there any reports of it hitting the ground or did it burn up before it hit?
  4. 15 Feb '13 11:24 / 4 edits
    Originally posted by sonhouse
    I was just getting ready to post it also but saw yours! Incredible, eh. Are there any reports of it hitting the ground or did it burn up before it hit?
    There were some questionable unconfirmed reports that it hit the ground.

    Apparently there were two explosions and shock waves observed so I am assuming here that it must have broke up at least in two pieces before hitting the ground -an indication perhaps that it probably completely exploded before hitting the ground although it is still perfectly possible that a fragment made it through.
    Time will tell for they are sending army personal to investigate the sites that are claimed to be where fragments landed.
  5. 15 Feb '13 11:38 / 1 edit
    Hey, I just noticed I have stolen googlefudge's thread -revenge of the googlefudge is nigh.
  6. Standard member sonhouse
    Fast and Curious
    15 Feb '13 12:42
    Originally posted by humy
    There were some questionable unconfirmed reports that it hit the ground.

    Apparently there were two explosions and shock waves observed so I am assuming here that it must have broke up at least in two pieces before hitting the ground -an indication perhaps that it probably completely exploded before hitting the ground although it is still perfectly possible t ...[text shortened]... re sending army personal to investigate the sites that are claimed to be where fragments landed.
    Some of the video's showed clearly 2 paths in the wake.
  7. 15 Feb '13 13:16 / 1 edit
    Originally posted by humy
    Hey, I just noticed I have stolen googlefudge's thread -revenge of the googlefudge is nigh.
    My thread had a pithier title :-p

    EDIT: Reposting my post here...

    http://www.slate.com/blogs/bad_astronomy/2013/02/15/breaking_huge_meteor_explodes_over_russia.html


    Duck and cover anyone?
  8. 15 Feb '13 15:24 / 1 edit
    Originally posted by humy
    http://phys.org/news/2013-02-meteor-shower-panic-central-russia.html

    the resulting explosions injured at least 250 people.

    watch the video link showing it as it was coming down!
    What time zone are you in?

    The strike was only this morning (both event local and my local time zone).


    EDIT: If you're in the USA, didn't the strike technically happen tomorrow from your standpoint?
  9. 15 Feb '13 15:55 / 3 edits
    Update:

    http://www.bbc.co.uk/news/world-europe-21468116

    Russian Academy for Sciences is estimating the meteorite mass at appx 10 tonnes.

    For a rock/iron asteroid with a density of around 3.5 tonnes per m3 that would mean
    that this was probably in the 3~4 cubic meter ballpark... And even an ice ball would
    only be 10 m3 ... [ r < (((3/4)*10)/Pi)^(1/3) ~ 1.34m or about 4"4'... Given the
    vagueness of the initial reports I would say that it;s probably safe to put this in the
    sub 2 meter radius category... assuming my maths hasn't gone AWOL today ]

    Which means that this meteorite... which has injured (according to current reports)
    at least 950 people and caused damage over hundreds if not thousands of square km
    was smaller than your car... albeit heavier... unless you drive a hummer.


    EDIT: bah... that should be 3/4 not 4/3 ... correcting it.
  10. 15 Feb '13 16:52
    Originally posted by googlefudge
    What time zone are you in?

    The strike was only this morning (both event local and my local time zone).


    EDIT: If you're in the USA, didn't the strike technically happen tomorrow from your standpoint?
    oh you have got me sussed; I have time traveled from tomorrow (Either that or I got my days mixed up).
  11. 15 Feb '13 17:10
    Originally posted by sonhouse
    Are there any reports of it hitting the ground or did it burn up before it hit?
    A six-meter diameter crater has been reported. (The V2 rocket left a crater around 15 meters in diameter.)
  12. 15 Feb '13 18:33
    http://www.slate.com/blogs/bad_astronomy/2013/02/15/breaking_huge_meteor_explodes_over_russia.html

    = some videos
  13. Standard member mikelom
    Ajarn
    16 Feb '13 06:08
    Originally posted by googlefudge
    Update:

    http://www.bbc.co.uk/news/world-europe-21468116

    Russian Academy for Sciences is estimating the meteorite mass at appx 10 tonnes.

    For a rock/iron asteroid with a density of around 3.5 tonnes per m3 that would mean
    that this was probably in the 3~4 cubic meter ballpark... And even an ice ball would
    only be 10 m3 ... [ r < (((3/4)*10)/ ...[text shortened]... .. unless you drive a hummer.


    EDIT: bah... that should be 3/4 not 4/3 ... correcting it.
    15m

    http://www.nasa.gov/mission_pages/asteroids/news/asteroid20130215.html

    -m.
  14. Standard member Kepler
    Demon Duck
    16 Feb '13 09:13
    Originally posted by mikelom
    15m

    http://www.nasa.gov/mission_pages/asteroids/news/asteroid20130215.html

    -m.
    And 7000 tonnes. Fair to middling chunk of space crap.
  15. 16 Feb '13 13:58
    Originally posted by Kepler
    And 7000 tonnes. Fair to middling chunk of space crap.
    Sigh.
    This is what happens when you rely on media reports without doing your own checking.

    Asteroid coincidence

    The Russian Academy of Sciences estimates that the meteor weighed about 10 tonnes and entered the Earth's atmosphere at a speed of at least 54,000 km/h (33,000mph).


    Either the BBC has made a serious typo... Or the Russian Academy of Sciences needs to
    relearn how to do maths... Personally I suspect the BBC.