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Antarctica: Site of the Biggest Impact Crater on Earth Revealed

 
danes1
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09/01/2010 06:55 AM
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Antarctica: Site of the Biggest Impact Crater on Earth Revealed
No mass extinction on Earth has been so tightly linked to an impact as the Chicxulub Crater which cuts across the northern Yucatan peninsula in Mexico in a mighty arc 170 kilometers (105 miles) across. The crater's size implies an asteroid some 10 kilometers -seven miles- wide and reaching a depth as deep as the deepest ocean trench plunging the Earth into a global winter night that cut off photosynthesis for months, even years.

But one other impact may make the Chicxulub look like a 4th of July event.

In 2006, NASA gravity and subsurface radar maps revealed a 500-kilometer-wide crater that lies hidden more than a mile beneath the East Antarctic Ice Sheet, created by a 50-kilometer wide object. The gravity measurements suggest that it could date back about 250 million years -- the time of the Permian-Triassic extinction, when almost all animal life on Earth died out.

[link to www.dailygalaxy.com]
Anonymous Coward
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09/01/2010 07:14 AM
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Re: Antarctica: Site of the Biggest Impact Crater on Earth Revealed
Sadly, that corresponds to the Yellowstone eruption cycle, and the last time we hit the galactic plane at the south pole.

Sheesh, that's bad news, for we are supposed to be hitting the galactic plane again, at our south pole, a year or two from now.
Anonymous Coward
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09/01/2010 08:27 AM
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Re: Antarctica: Site of the Biggest Impact Crater on Earth Revealed
Won't be long for the Zetas/Nibirutards to jump in and claim this was the result of Nibiru coming up from the south in the past and the accompanying debris smashed into the earth.
Anonymous Coward
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09/01/2010 09:04 AM
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Re: Antarctica: Site of the Biggest Impact Crater on Earth Revealed
"(What has kept the Earth "safe" at least the past 65 million years, other than blind luck is the massive gravitational field of Jupiter, our cosmic guardian, with its stable circular orbit far from the sun, which assures a low number of impacts resulting in mass extinctions by sweeping up and scatters away most of the dangerous Earth-orbit-crossing comets and asteroids)"

Interesting cool2
Epic Beard Guy

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09/01/2010 09:15 AM
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Re: Antarctica: Site of the Biggest Impact Crater on Earth Revealed
This certainly would explain the Permian extinction.
clappa
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Anonymous Coward
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09/01/2010 09:17 AM
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Re: Antarctica: Site of the Biggest Impact Crater on Earth Revealed
Sadly, that corresponds to the Yellowstone eruption cycle, and the last time we hit the galactic plane at the south pole.

Sheesh, that's bad news, for we are supposed to be hitting the galactic plane again, at our south pole, a year or two from now.
 Quoting: Anonymous Coward 1084850



bsflag
Anonymous Coward
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09/01/2010 09:18 AM
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Re: Antarctica: Site of the Biggest Impact Crater on Earth Revealed
Won't be long for the Zetas/Nibirutards to jump in and claim this was the result of Nibiru coming up from the south in the past and the accompanying debris smashed into the earth.
 Quoting: Anonymous Coward 1085974


+100
5a
Anonymous Coward
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09/01/2010 09:18 AM
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Re: Antarctica: Site of the Biggest Impact Crater on Earth Revealed
LOL @ "250 Million years ago".......
Cimbrian

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09/01/2010 09:49 AM
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Re: Antarctica: Site of the Biggest Impact Crater on Earth Revealed
"(What has kept the Earth "safe" at least the past 65 million years, other than blind luck is the massive gravitational field of Jupiter, our cosmic guardian, with its stable circular orbit far from the sun, which assures a low number of impacts resulting in mass extinctions by sweeping up and scatters away most of the dangerous Earth-orbit-crossing comets and asteroids)"

Interesting cool2
 Quoting: Anonymous Coward 619959


All hail Big Brother Jupiter. 5a
I am a GLP Hater!
Levi Philos
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09/01/2010 10:39 AM
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Re: Antarctica: Site of the Biggest Impact Crater on Earth Revealed
Sadly, that corresponds to the Yellowstone eruption cycle, and the last time we hit the galactic plane at the south pole.

Sheesh, that's bad news, for we are supposed to be hitting the galactic plane again, at our south pole, a year or two from now.
 Quoting: Anonymous Coward 1084850


That "galactic plane" stuff is just so much BS. How can anyone define a galactic plane? The milky way galaxy as portrayed from on edge is roughly egg shaped and is 30-40 light years in thickness at the center and thins to 3-4 light years at the edge.

Nobody knows the total number of stars or the total mass. To define a plane requires firm knowledge of these facts.

We (the sol system of star and planets) also out on the edge in one of the spiral arms and rotating about the center of the galactic mass. If we are crossing the galactic plane, then it is equally true we have been crossing the galactic plane for a geologic age already and will be crossing for many thousands of years into the future.

I am not an astronomer; just an old carpenter with a brain that still works.

Levi Philos
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09/01/2010 10:42 AM
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Re: Antarctica: Site of the Biggest Impact Crater on Earth Revealed
"(What has kept the Earth "safe" at least the past 65 million years, other than blind luck is the massive gravitational field of Jupiter, our cosmic guardian, with its stable circular orbit far from the sun, which assures a low number of impacts resulting in mass extinctions by sweeping up and scatters away most of the dangerous Earth-orbit-crossing comets and asteroids)"

Interesting cool2


All hail Big Brother Jupiter. 5a
 Quoting: Cimbrian



father


chronos


time
Levi Philos
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09/01/2010 10:48 AM
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Re: Antarctica: Site of the Biggest Impact Crater on Earth Revealed
To continue my previous reply, I would bet that the motion about the galactic plane of any star system is a slow oscillation above and below the plane. Study the motion of any body in the rings of Saturn for a metaphorical comparison.

At any segment of time (hundreds of thousands of years) the large vector could be at a small angle away from or toward the plane. The small vector would be an extremely slow measure of velocity toward or away from the plane.

Difficult to impossible for astronomers to measure.
Anonymous Coward
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09/01/2010 05:05 PM
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Re: Antarctica: Site of the Biggest Impact Crater on Earth Revealed
Sadly, that corresponds to the Yellowstone eruption cycle, and the last time we hit the galactic plane at the south pole.

Sheesh, that's bad news, for we are supposed to be hitting the galactic plane again, at our south pole, a year or two from now.


That "galactic plane" stuff is just so much BS. How can anyone define a galactic plane? The milky way galaxy as portrayed from on edge is roughly egg shaped and is 30-40 light years in thickness at the center and thins to 3-4 light years at the edge.

Nobody knows the total number of stars or the total mass. To define a plane requires firm knowledge of these facts.

We (the sol system of star and planets) also out on the edge in one of the spiral arms and rotating about the center of the galactic mass. If we are crossing the galactic plane, then it is equally true we have been crossing the galactic plane for a geologic age already and will be crossing for many thousands of years into the future.

I am not an astronomer; just an old carpenter with a brain that still works.

Levi Philos
 Quoting: Levi Philos 590644


The same Aztec that hint at the galactic plane, calling it the dark rift or the feathered serpent, also have drawings of great power symbols that have four legs, the swastika that the Nazi used to represent their great power. It is believed by many that that symbol represents the Milky Way galaxy. If so, how did they know that our galaxy had only four arms? Last decade our science books showed we had eight.

They knew way too much for it all to be coincidence. Why not use your brain and realize that ancient civilizations once had greater scientific knowledge than our present day civilization. Thus, if they say there is a dark rift, we should not so foolishly dismiss it.





GLP