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Finally confirmed: An asteroid wiped out the dinosaurs


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#1 Tystick

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Posted 08 February 2013 - 02:24 PM

Finally confirmed: An asteroid wiped out the dinosaurs


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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 cloudPosted Image 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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Chicxulub topography. You can just about see a portion of the impact crater in the top left corner.

Until now, though, there hasn’t been enough evidence that the Chicxulub impact actuallycaused the Cretaceous-Paleogene extinction. There was certainly a massive asteroid impact, but previous evidence showed that the asteroid impact occurred up to 300,000 years before the extinction of the dinosaurs. Biologists and geologists have argued that there may have been another cause — an impact at the Shiva crater off the coast of India, global volcanic eruptions, or perhaps something more gradual.

Now, however, European and American scientists have re-tested debris from Chicxulub using state-of-the-art equipment and narrowed the asteroid impact down to a period of 11,000 years, between 66.03 and 66.04 million years agoalmost simultaneous with the Cretaceous-Paleogene extinction. When dealing with geological timescales, a range of 11,000 years is about as accurate as you can get. As the research paper puts it, though, “the Chicxulub impact likely triggered a state shift of ecosystems already under near-critical stress.” In other words, prior to the extinction event, Earth was already teetering on the edge of self-annihilation. The asteroid was simply the zettajoule stick that broke T-Rex’s back.


Taken from article here




Interesting,

It gets you thinking that maybe the massive asteroid gained orbit around the earth after impact, becoming what we know as the moon. It would explain why both the Earth and the moon are rotating.

Just speculation of course.
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#2 Harbinger

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Posted 08 February 2013 - 02:28 PM

It's true but it only happened 6000 years ago
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#3 SkeeterHansen

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Posted 08 February 2013 - 02:29 PM

It's true but it only happened 6000 years ago


Lol, good one
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#4 gurmy_33

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Posted 08 February 2013 - 02:34 PM

hi
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#5 TheAce

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Posted 08 February 2013 - 02:47 PM

so does this mean that dinosaur's didnt turn into birds ?
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#6 Buddhas Hand

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Posted 08 February 2013 - 02:57 PM

Asteroid 2012 DA14 – Earth Flyby Reality Check
02.04.13


Small near-Earth asteroid 2012 DA14 will pass very close to Earth on February 15, so close that it will pass inside the ring of geosynchronous weather and communications satellites. NASA's Near-Earth Object Program Office can accurately predict the asteroid's path with the observations obtained, and it is therefore known that there is no chance that the asteroid might be on a collision course with Earth. Nevertheless, the flyby will provide a unique opportunity for researchers to study a near-Earth object up close. Here are the facts about the safe flyby of Earth of asteroid 2012 DA14 -- a record close approach for a known object of this size.



Update Feb. 7, 2013
Asteroid 2012 DA14 Flyby Preview

NASA held a media teleconference on Thursday, Feb. 7, to discuss asteroid 2012 DA14 which will have a very close, but safe, flyby of Earth on Feb. 15, 2013. Also discussed are NASA's efforts to find potentially hazardous near-Earth objects

http://www.nasa.gov/...ia_id=159372691

http://www.nasa.gov/...ia_id=159378831

http://www.nasa.gov/...ia_id=159069511


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Graphic depicts the trajectory of asteroid 2012 DA14 on Feb 15, 2013. In this view, we are looking down from above Earth's north pole. Image credit: NASA/JPL-Caltech
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#7 Shift-4

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Posted 08 February 2013 - 02:57 PM

so does this mean that dinosaur's didnt turn into birds ?


No

It means there was no Bruce Willis dinosaur
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#8 Heretic

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Posted 08 February 2013 - 03:08 PM

That's the 3rd largest known crater on the planet:

http://en.wikipedia....raters_on_Earth
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McCoy: We were speculating. Is God really out there?
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#9 pimpcurtly

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Posted 08 February 2013 - 03:15 PM

So did God send that asteroid?
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#10 Buddhas Hand

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Posted 08 February 2013 - 03:16 PM

That's the 3rd largest known crater on the planet:

http://en.wikipedia....raters_on_Earth


as·tro·bleme

/ˈæsPosted Imagetrəˌblim/ Show Spelled [as-truh-bleem] Show IPA

noun Geology .
an erosional scar on the earth's surface, produced by the impact of a cosmic body, as a meteorite or asteroid. Compare crater ( def 2 ) .

Origin:
1965–70; < astro- + -bleme (< Greek blêma shot, wound)
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That men do not learn very much from the lessons of history is the most important of all the lessons that history has to teach.

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#11 Jai604

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Posted 08 February 2013 - 03:40 PM

Fascinating.

Thanks for posting.
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#12 Heretic

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Posted 08 February 2013 - 03:42 PM

It's true but it only happened 6000 years ago


No, 6000 years ago the machines took over.

We've been living in a dream world since then.

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McCoy: We were speculating. Is God really out there?
Kirk: Maybe he's not out there, Bones. Maybe he's right here. [points to his heart]

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#13 Duodenum

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Posted 08 February 2013 - 03:43 PM

Interesting,

It gets you thinking that maybe the massive asteroid gained orbit around the earth after impact, becoming what we know as the moon. It would explain why both the Earth and the moon are rotating.

Just speculation of course.

No...the moon was formed 4+ billion years ago, far before a 9 mile long asteroid wiped out the dinosaurs.
Planets spin due to angular momentum.
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#14 Jägermeister

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Posted 08 February 2013 - 03:50 PM

So did God send that asteroid?


Clearly the Dinosaurs were a bunch of sinners.
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#15 canucks#01fan

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Posted 08 February 2013 - 04:05 PM

Clearly the Dinosaurs were a bunch of sinners.

i dont think it was possible for a t-rex to..,.,
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Credit to -Vintage Canuck- for avatar

#16 J.R.

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Posted 08 February 2013 - 04:10 PM

i dont think it was possible for a t-rex to..,.,


Apparently you've never met a T-rex!
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#17 GodzillaDeuce

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Posted 08 February 2013 - 04:10 PM

i dont think it was possible for a t-rex to..,.,


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well I'm sorry that gd is soo perfect


#18 canucks.bradley

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Posted 08 February 2013 - 04:21 PM

Interesting,

It gets you thinking that maybe the massive asteroid gained orbit around the earth after impact, becoming what we know as the moon. It would explain why both the Earth and the moon are rotating.

Just speculation of course.


that hurt my head...a lot..

but a very interesting article nontheless. i loved dinosaurs growing up
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#19 L'Orange

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Posted 08 February 2013 - 04:36 PM

Blasphemy! Witchcraft! Dinosaurs as we all know were rendered extinct by Jesus. I mean....really.
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#20 Heretic

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Posted 08 February 2013 - 04:41 PM

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http://www.mint.ca/s...012-prod1290004

Edited by Heretic, 08 February 2013 - 04:42 PM.

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McCoy: We were speculating. Is God really out there?
Kirk: Maybe he's not out there, Bones. Maybe he's right here. [points to his heart]

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#21 Ovech Trick

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Posted 08 February 2013 - 05:29 PM

This is the kind of stuff I like to read, really interesting.
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#22 Lancaster

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Posted 08 February 2013 - 05:42 PM

I wonder what the whole "Earth was already teetering on the edge of self-annihilation" part was about.

I guess the Flintstones were abusing the planet too and contributing to climate change, lol.
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#23 Buddhas Hand

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Posted 08 February 2013 - 06:11 PM

This is the kind of stuff I like to read, really interesting.



Right on mate.
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The Real war is not between the east and the west. The real war is between intelligent and stupid people.

Marjane Satrapi

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That men do not learn very much from the lessons of history is the most important of all the lessons that history has to teach.

Aldous Huxley.


#24 Erik Karlsson

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Posted 08 February 2013 - 06:21 PM

It was the Flood.
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Credit to -Vintage Canuck-


#25 Tortorella's Rant

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Posted 08 February 2013 - 06:39 PM

Uh, excuse me, dinosaurs lived with man and Fred Flintstone actually existed.

Thanks.
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#26 Armada

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Posted 08 February 2013 - 11:37 PM

I find it hard to believe that a asteroid could ever wipe out the human race.

Obviously many lives would be loss but more than half the worlds population would still be alive.

The real question is would we still live as we do today or would it be an apocalyptic wasteland where people do anything to survive..

Also one of my favorite Cyanide and Happiness comic related to this topic

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Edited by Armada, 09 February 2013 - 12:08 AM.

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______________Eat, Sleep,Posted ImageRave, Repeat

#27 CanucksSayEh

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Posted 08 February 2013 - 11:50 PM

Those damn Mexicans and their asteroids.
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#28 NightHawkSniper

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Posted 09 February 2013 - 12:08 AM

I find it hard to believe that a asteroid could ever wipe out the human race.

Obviously many lives would be loss but more than half the worlds population would still be alive.

The real question is would we still live as we do today or would it be an apocalyptic wasteland where people do anything to survive..


Book of Eli style!
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#29 Kryten

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Posted 09 February 2013 - 12:37 AM

I wonder what the whole "Earth was already teetering on the edge of self-annihilation" part was about.

I guess the Flintstones were abusing the planet too and contributing to climate change, lol.


Not quite. The dinosaur population voted to legalize same-sex marriages. Homosexual dinosaurs attract apocalyptic asteroids, human homosexuality causes apocalyptic hurricanes and super-storms. It's all science.
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#30 Argon

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Posted 09 February 2013 - 03:10 PM

Not quite. The dinosaur population voted to legalize same-sex marriages. Homosexual dinosaurs attract apocalyptic asteroids, human homosexuality causes apocalyptic hurricanes and super-storms. It's all science.


obamas just keeping it quiet
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