Large meteor and earth

Discussion in 'Science' started by MR CHILLED, Sep 5, 2008.

  1. MR CHILLED

    MR CHILLED D'oh!

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    Apparently what happens if a large meteor were to hit earth....

    http://www.liveleak.com/view?i=c70_1220407735

    I don't know how factually correct this would be but shows you how fickle our existance really is.

    And it has happened 6 times in the history of the earth, or so it suggests.
     
  2. Arch-Angel

    Arch-Angel Member

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    Now THAT's Global Warming!

    I serioulsy I just happen to be on vacation in space at that particular time - would be awesome to watch!

    Never going to happen though- the US government would just send a crack team of oil rig drillers (lead by Bruce Willis) up there and nuke the sucker. The only benefit to that scenario (for me) would be the the awesome fireworks show and Aerosmith soundtrack.
     
  3. heyimsu

    heyimsu Member

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    That was pretty awesome. Everything wiped out and life starts from a clean slate.
     
  4. OP
    OP
    MR CHILLED

    MR CHILLED D'oh!

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    heh.....a very real possibility....we can probably do nothing about it before it hits, but at least we will probably know we are going to die ahead of time : )
     
  5. adamsleath

    adamsleath Member

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    bring it on! :tongue:...actually looks terrifying :(

    however i am sceptical that it has happened six times, or that the impacts have been that large...but i got no way of knowing this. earth supposed to be about 4 billion years old, so that's a lot of time for some large meteors to hit.

    personally i dont believe the earth has seen 6 mass extinctions of all life, but based on what little info i have is that partial extinctions have occurred posssibly due to meteor impact, but some forms of life survived through these catastrophic periods.
     
    Last edited: Sep 5, 2008
  6. Arch-Angel

    Arch-Angel Member

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    You reckon?

    I wonder:
    1. How much notice we'd have? (Days, weeks, months, years??)
    2. What we could do about it?

    Would a couple of rockets armed with all the nukes we could cram into it be enough to send it off course?
    I suppose with something as big as that 500km one we'd have no chance... Or even if we did deflect it, the shockwave as it passed by the planet would surely do some damage?
     
  7. OP
    OP
    MR CHILLED

    MR CHILLED D'oh!

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    How much time would we have, I wouldn't know tbh. WHat can we do about it? Very very little at present, and even with smaller ones. Probably the very large ones would be the major concern, obviously.
     
  8. Recharge

    Recharge Member

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    stolen from a BBC space documentary series ftw! (cause I've seen it ;) )

    hosted by sam neill no less

    further info, animations and other stuff available at http://www.bbc.co.uk/science/space/

    projected size of rock in animation 5km, life on planet deleted to a depth of 1km, BUT! life is to a known depth of 5km currently, life would return to earth given time :o

    :D
     
    Last edited: Sep 5, 2008
  9. OP
    OP
    MR CHILLED

    MR CHILLED D'oh!

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    Worth seeing the whole thing?
     
  10. Recharge

    Recharge Member

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    worth seeing?, oh yes indeed!. (it's a six part series)

    others also worth seeing (science wise)

    cosmos (Carl Sagan), miracle planet (canada) and Steven Hawking's universe
     
  11. OP
    OP
    MR CHILLED

    MR CHILLED D'oh!

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    Ok, thanks for that.......I'll give it a look in this weekend.
     
  12. CynC

    CynC Member

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    It's actually from the last episode of Miracle Planet (total 5). Narration by Christopher Plummer. The Space documentary and those others are still great nevertheless.

    http://img511.imageshack.us/my.php?image=mpvu6.jpg
     
  13. Goth

    Goth Grumpy Member

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    Well, no, it doesn't kill all life on Earth. Just some of it.

    Well, exactly. With the KT extinction event, for example, our mammalian ancestors survived, as well as some smaller ancestors of modern reptiles and birds.

    The thing is, if such an object that was going to collide with the Earth were detected, then, personally, I have to believe that we would take the entire intellectual and technological wealth of the entire human race, and we would do whatever it takes to successfully prevent it, period.

    Our scientific and technological prowess is capable of incredible things, but these things aren't done because of political limitations, political bullshit, arguing about how much it costs, or whatever.

    I have to believe that, when considering such an event, that would kill everybody on Earth, then all such considerations are tossed aside, and we go and get it done, as one human species, with no politicians involved, and get it done we would.
     
  14. OP
    OP
    MR CHILLED

    MR CHILLED D'oh!

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    You would certainly hope that would be the case Goth. But I have my doubts when man is even faced with immanent extinction.
     
  15. Bold Eagle

    Bold Eagle Member

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  16. daztay

    daztay Member

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    I wonder if the comet would break up, before impact, as it approached earths gravity, like shoemaker-levy 9 did when it hit Jupiter?

    That reminds of a book called "Comets" written by Michael levy and it has a chapter on the comet dooms days senerio.
     
    Last edited: Sep 6, 2008
  17. Menthu_Rae

    Menthu_Rae Member

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    500km sized impactor is pretty insane... considering the Chicxulub impactor was ~10km in size...

    http://en.wikipedia.org/wiki/Chicxulub_crater

    I don't think anything except lifeforms at the deepest depths of the oceans/lakes living off geothermal/radioactive energy would survive (the 500km sized impact). :tongue:

    Whilst it's possible that we can be hit by something we don't seem coming - there are also things that we know are there right now which will pose a threat in the future.

    Anyone superstitious about Friday the 13th? Heh...

    http://en.wikipedia.org/wiki/99942_Apophis
     
  18. The Sentinel

    The Sentinel Member

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    So if 10 km think of crust are stripped then why would there still be buildings left after one day??
     
  19. Bold Eagle

    Bold Eagle Member

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    I will assume this only occurred at the initial impact zone and locality.
     
  20. The Sentinel

    The Sentinel Member

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    From the same school of sensationalism as TT/ACA. ;)
     

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