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[ExtremeTech] Finally confirmed: An asteroid wiped out the dinosaurs - Page 6  

post #51 of 162
So basically at the time of extinction they were already in bad shape, sounds like humans haha
    
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post #52 of 162



how did dinosaurs go extinct when there are evolved forms of animals still in existence?
post #53 of 162
its almost as if the big funding goes to the scientists who can come up with obvious answers to tell everyone what they want to hear
post #54 of 162
well they are close minded people who dont believe that there is life outside our galaxy, its simple logic really, they are infinite amount of galaxies in one of them there is bound to be life similar to earth.
just a matter of time before we can prove it.

back to topic, was this not proved years ago?
post #55 of 162
Quote:
Originally Posted by StormX2 View Post

I don't know why they needed to wait so long, the amount of evidence supporting this has been staggering for a very long time now..

Prior to now, we could not be certain the Chicxulub impact and the Cretaceous-Paleogene extinction event occurred at the same time. We knew it was close, but there was a 300k year margin of error, which was too much to be certain. Now with an 11,000 year margin of error, it's almost inconceivable that they were not directly intertwined.
Quote:
Originally Posted by Deeldo View Post

Perhaps one day, but we'll be ready for it.

Not if that one day is any time soon.
Quote:
Originally Posted by k4m1k4z3 View Post

I just don't see how a revised testing of debris(from the Asteroid?) that they found in Mexico could prove anything like this in the first place.

The only thing really in question was the dating. New tests with better equipment allowed a much more precise date.

We've know the crater was there for quite some time, and have had a ballpark figure on it's age, but now we know it matches nearly perfectly with the extinction event.
Quote:
Originally Posted by atomicmew View Post

I'm curious whether they mean 75% of animal species or plant and animal species? It certainly isn't 75% of all species.

75% of all species, plants, animals, and more.

And there have been worse extinction events.
Quote:
Originally Posted by 47 Knucklehead View Post

So their "confirmation" is really just "we *think* this is what happened, and we have no direct evidence, but we have really good circumstantial evidence, but trust us anyway." rolleyes.gif

Uhh, no, not at all.

There is a mountain of direct evidence, this article is simply about the last small piece that will seal the confirmation (once it's been reviewed).
Quote:
Originally Posted by 47 Knucklehead View Post

Not to be flip or anything, but why?

To better understand the ecological and biological history of this planet. To see what causes mass extinction events and how biodiversity recovers. Not to mention the infinite implications of these things down the line.
Quote:
Originally Posted by 47 Knucklehead View Post

It's not like we could stop a meteor from wiping us out if we discovered one today anyway.

We'd likely need decades of warning, but we certain have the tools to deflect an asteroid, if our lives depended on it.
Quote:
Originally Posted by 47 Knucklehead View Post

We have A LOT more pressing issue to deal with as a species than worrying what wiped out lizards 65 million years ago, and we don't even bother with dealing with them.

I think you've missed the point.
Quote:
Originally Posted by Clipze View Post

how did dinosaurs go extinct when there are evolved forms of animals still in existence?

Not sure what you are saying.

Dinosaurs are extinct. This does not mean all of their descendants are.
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post #56 of 162
Quote:
Originally Posted by Blameless View Post


Dinosaurs are extinct. This does not mean all of their descendants are.

how can there be descendants from something thats extinct...
post #57 of 162
Quote:
Originally Posted by Clipze View Post

Quote:
Originally Posted by Blameless View Post


Dinosaurs are extinct. This does not mean all of their descendants are.

how can there be descendants from something thats extinct...

Source: The interwebz

"When the meteor hit, it wasn't the actual impact that killed off the dinosaurs (although the impact was a MASSIVE event). The material ejected from the impact crater fell back to earth, heating the atmosphere worldwide. The air temperature at the surface was like an oven worldwide, and almost everything on the surface died. Plants all burst into flames. But anything small enough to escape underground (or anything that could stay underwater) could survive. Thus, dinosaurs died off, but fish and our ancestors (at this time, small rodent-like mammals, you might call them ancient rats) survived. Any dinosaurs that did survive were killed by the collapse of the ecosystem. With no plants and little sunlight because of all the dust in the atmosphere after the impact, it was like a nuclear winter. There was no longer enough food to support large life forms, but there was enough for small ones like our ancestors."

It's either that or aliens.
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post #58 of 162
Not that anyone was paying attention but we have happen to have the largest one in a while to very closely buzz us next week. Feb 15th.

Asteroid Flyby DA14
Quote:
An asteroid half the size of a football field will make a close approach to Earth, but poses no threat of smacking into the planet, NASA officials said today (Feb. 7).

The asteroid 2012 DA14 will approach within 17,200 miles (27,680 kilometers) of Earth when it zips by during its close encounter next Friday, Feb. 15. That is the closest shave ever for an asteroid the size of 2012 DA14, which is about 150 feet (45 meters) wide, that astronomers have known about in advance, NASA scientists said.

The asteroid will not only pass between Earth and the moon's orbit, but also fly lower than the ring of geosynchronous communications, weather and navigation satellites that fly high above the planet. Asteroid 2012 DA14 will be 5,000 miles (8,046 km) closer to Earth than those satellites during the flyby.

While this is a big momma, and if it curved into us and hit it would be a local extinction event for only a couple hundred square miles if comparable to the one that hit in 1908 in the Siberia, Russia. I'm sure they'd tell us if it actually was going to hit somewhere...rolleyes.gif I think I saw that movie...

Just timely for this thread...
Edited by Ghoxt - 2/9/13 at 5:52am
post #59 of 162
And just think, it was discovered less than 1 year ago (February 23, 2012), and it has a very real possibility (granted slim one) that it could hit the Earth ... and there isn't thing one we could do about it.
post #60 of 162
nice read.....thank you smile.gif


also

Alien 1 - "DUDE!!! You sent the wrong asteroid!"
Alien 2 - "Whaaaat?"
Alien 1 - "YEA! You were supposed to sent THAT one!"
Alien 2 - "Well you better let management know cause this report say THIS one!"
Alien 2 - "Anyway what's the big deal? It's just Earth."
Alien 1 - "What's the bid deal? ARE YOU SERIOUS?"
Alien 1 - "Do you have ANY IDEA what's spreading on it now because of your mistake?"
    
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