Finally confirmed: An asteroid wiped out the dinosaurs

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    Feb 10, 2013 5:46 PM GMT
    http://www.extremetech.com/extreme/147978-finally-confirmed-an-asteroid-wiped-out-the-dinosaurs

    A team of American and European researchers have confirmed that the Cretaceous-Paleogene extinction — the event that wiped out roughly 75% of the planet’s species, including almost every dinosaur — was caused by an asteroid impact in Mexico 66 million years ago. The Cretaceous–Paleogene extinction was the last great extinction event to occur on Earth, and is most notable for causing the diversification of mammals that eventually resulted in Homo sapiens.

    66 million years ago an asteroid roughly 15 kilometers (9 miles) wide hurtled into Chicxulub, Mexico. The collision, which left behind a 180-kilometer (110-mile) crater, released 420 zettajoules of energy — 100 teratonnes of TNT, or roughly two million times stronger than the largest thermonuclear device ever used (the Russian Tsar Bomba). The impact created a huge dust cloud that blocked out the Sun, starting the extinction ball rolling by killing off much of the world’s plants, and thus the herbivores soon after. Due to high levels of oxygen in the Cretaceous atmosphere, the impact may also have caused intense, global firestorms that killed off many other species. Because the asteroid landed in the ocean, megatsunamis would’ve swept the world’s coasts, too.
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    Feb 11, 2013 6:11 PM GMT
    I always thought it was this:

    images?q=tbn:ANd9GcQQ3rniC_wlrICLxwC1N5a



    Gary Larson was brilliant!
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    Feb 11, 2013 6:21 PM GMT
    Then exploded and disintegrated in the atmosphere.

  • Feb 11, 2013 6:43 PM GMT
    I have always known this, if it had not been for this asteroid we would not be here or it would taken millions of more years for us to evolve to this point. Either way this is still old news.
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    Feb 11, 2013 7:30 PM GMT
    pattymcdaddy26 saidI have always known this, if it had not been for this asteroid we would not be here or it would taken millions of more years for us to evolve to this point. Either way this is still old news.

    The breakthrough appears to be the narrowing of the asteroid impact and the extinction event to within 11,000 years of each other. Prior to that the 2 events were possibly separated by as much as 300,000 years, which caused doubt that there was a direct cause & effect.

    This extremely close proximity in time raises the likelihood that the asteroid impact was indeed the direct trigger for the extinction, if not the sole cause. An asteroid was long a strong suspect, due to iridium studies done decades ago by Luis Avarez and his son Walter, and the later discovery of the crater itself, but this may clinch it.
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    Feb 11, 2013 7:34 PM GMT
    Trick Question!

    There were no dinosaurs! God created Adam and Eve!

    Dino bones and fossils were put there by the Liberal Media to take us away from Religion!!! EVIL BASTARDS! icon_mad.gif
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    Feb 11, 2013 7:37 PM GMT
    This was confirmed by a team of researchers? Okay, fine, but that still means it's a theory; and a theory is still a theory.

    There are no new facts to prove beyond the shadow of a doubt that the Cretaceous-Paleogene extinction was caused by an asteroid, or that an asteroid was responsible for any mass extinction.

    icon_rolleyes.gif
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    Feb 11, 2013 7:52 PM GMT
    credo saidThis was confirmed by a team of researchers? Okay, fine, but that still means it's a theory; and a theory is still a theory.

    There are no new facts to prove beyond the shadow of a doubt that the Cretaceous-Paleogene extinction was caused by an asteroid, or that an asteroid was responsible for any mass extinction.

    icon_rolleyes.gif


    And your point is, credo?
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    Feb 11, 2013 8:00 PM GMT
    credo saidThis was confirmed by a team of researchers? Okay, fine, but that still means it's a theory; and a theory is still a theory.




    So is gravity.
    Jump off a skyscraper and tell me what you think about theories then.
    icon_smile.gif
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    Feb 11, 2013 8:04 PM GMT
    timshel said
    credo saidThis was confirmed by a team of researchers? Okay, fine, but that still means it's a theory; and a theory is still a theory.




    So is gravity.
    Jump off a skyscraper and tell me what you think about theories then.
    icon_smile.gif


    Actually, gravity is a law. Einstein's theory of relativity is a theory. Evolution is a theory. But I still think credo should test it out...just for scientific purposes of course. Maybe not a skyscraper though. How about a second story window?
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    Feb 11, 2013 8:05 PM GMT
    Sungod17 saidI always thought it was this:

    images?q=tbn:ANd9GcQQ3rniC_wlrICLxwC1N5a



    Gary Larson was brilliant!

    ^^ This
    The Argyle Sweater is the only thing that comes close to The Far Side
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    Feb 11, 2013 8:53 PM GMT
    timshel said
    credo saidThis was confirmed by a team of researchers? Okay, fine, but that still means it's a theory; and a theory is still a theory.




    So is gravity.
    Jump off a skyscraper and tell me what you think about theories then.
    icon_smile.gif


    No, but nice try.

    icon_lol.gif
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    Feb 11, 2013 8:57 PM GMT
    So imaginative.
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    Feb 11, 2013 8:59 PM GMT
    credo saidThis was confirmed by a team of researchers? Okay, fine, but that still means it's a theory; and a theory is still a theory.

    There are no new facts to prove beyond the shadow of a doubt that the Cretaceous-Paleogene extinction was caused by an asteroid, or that an asteroid was responsible for any mass extinction.

    icon_rolleyes.gif


    My hero.
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    Feb 11, 2013 9:02 PM GMT
    redsoxfan791 said
    credo saidThis was confirmed by a team of researchers? Okay, fine, but that still means it's a theory; and a theory is still a theory.

    There are no new facts to prove beyond the shadow of a doubt that the Cretaceous-Paleogene extinction was caused by an asteroid, or that an asteroid was responsible for any mass extinction.

    icon_rolleyes.gif


    And your point is, credo?


    My point is that your father should've worn a condom to prevent your conception. I suggest you jump out of a two-story window to correct your father's mistake.
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    Feb 11, 2013 9:13 PM GMT
    I guess I haven't got that issue yet. But for now, it's just another data point that will be argued over intensely at meetings for the next couple of years.

    Really, the only reason that most people hold out reservations on the asteroid theory is the remarkable coincidence of the Deccan Traps eruption at about the same time (plus or minus the error in the various time estimates.) Which might have done the job on its own. That is, there are two separate plausible causes happening at around the same time. Of course, nobody really knows exactly what caused the Deccan Traps eruption either. And the two events could have been a double-tap knockout to cause mass extinction.
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    Feb 11, 2013 9:14 PM GMT
    credo said
    redsoxfan791 said
    credo saidThis was confirmed by a team of researchers? Okay, fine, but that still means it's a theory; and a theory is still a theory.

    There are no new facts to prove beyond the shadow of a doubt that the Cretaceous-Paleogene extinction was caused by an asteroid, or that an asteroid was responsible for any mass extinction.

    icon_rolleyes.gif


    And your point is, credo?


    My point is that your father should've worn a condom to prevent your conception. I suggest you jump out of a two-story window to correct your father's mistake.


    I love RJ...icon_lol.gif
  • offshore

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    Feb 11, 2013 9:19 PM GMT
    There are still a lot of unanswered questions.
    e.g. Why the dinosaurs? There are a number of small warm blooded feathered dinosaurs equipped as well as birds to handle this event. Why did they not survive?
    Why did marine reptiles like mosasaurs die out but not turtles?
    this is only the beginning of the real research
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    Feb 11, 2013 9:34 PM GMT
    offshore saidThere are still a lot of unanswered questions.
    e.g. Why the dinosaurs? There are a number of small warm blooded feathered dinosaurs equipped as well as birds to handle this event. Why did they not survive?
    Why did marine reptiles like mosasaurs die out but not turtles?
    this is only the beginning of the real research


    Many species survived, though they were much smaller ones. The type of dinosaur that birds belong to most certainly survived. Mammals at the time also were quite small and adaptable. Megafauna require lots of food, and an asteroid-induced winter would have had a major effect on that. Rats, however, seem capable of eating nearly anything.
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    Feb 11, 2013 9:42 PM GMT
    Bitch fighting over dinos?

    Lulz.
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    Feb 11, 2013 9:43 PM GMT
    A Steroid wiped out the dinosaurs? Damned juice pigs had it coming! icon_lol.gif
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    Feb 11, 2013 9:48 PM GMT
    mindgarden saidI guess I haven't got that issue yet. But for now, it's just another data point that will be argued over intensely at meetings for the next couple of years.

    Really, the only reason that most people hold out reservations on the asteroid theory is the remarkable coincidence of the Deccan Traps eruption at about the same time (plus or minus the error in the various time estimates.) Which might have done the job on its own. That is, there are two separate plausible causes happening at around the same time. Of course, nobody really knows exactly what caused the Deccan Traps eruption either. And the two events could have been a double-tap knockout to cause mass extinction.


    Right to the point.
    The better we know the facts, the better we can make educated guess at process and causalities.

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    Feb 11, 2013 9:59 PM GMT
    7Famark saidBitch fighting over dinos?

    Lulz.


    I was gonna say... People will fight over anything in these forums.
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    Feb 11, 2013 10:03 PM GMT
    It ain't a proper thread till someone tells you that shouldn't have been born over Jurassic Park! icon_wink.gif
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    Feb 11, 2013 10:11 PM GMT
    stupid primitive science don't know how to do there studies right, the all think the same, the same stupid concept is gutting old and out of date. no the dinosaurs where not wiped off 66 million years ago by an astroid, some scientist can be so stupidicon_rolleyes.gif

    there where other event that caused the extinction of dinosaurs, also what happened to most dinosaurs is quit interesting, especially when you think about genetic engineering teheheh.