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Astronomy Picture of the Day
NASA ^ | 4/20/08 | Credit:</b> Debra Meloy Elmegreen (Vassar College) et al.,

Posted on 04/20/2008 5:24:36 AM PDT by sig226


Spiral Galaxies in Collision
Credit:
Debra Meloy Elmegreen (Vassar College) et al.,
& the Hubble Heritage Team (AURA/STScI/NASA)

Explanation: Billions of years from now, only one of these two galaxies will remain. Until then, spiral galaxies NGC 2207 and IC 2163 will slowly pull each other apart, creating tides of matter, sheets of shocked gas, lanes of dark dust, bursts of star formation, and streams of cast-away stars. Astronomers predict that NGC 2207, the larger galaxy on the left, will eventually incorporate IC 2163, the smaller galaxy on the right. In the most recent encounter that peaked 40 million years ago, the smaller galaxy is swinging around counter-clockwise, and is now slightly behind the larger galaxy. The space between stars is so vast that when galaxies collide, the stars in them usually do not collide.


TOPICS: Astronomy Picture of the Day
KEYWORDS: apod

1 posted on 04/20/2008 5:24:36 AM PDT by sig226
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To: fnord; Number57; KevinDavis; rdb3; MNJohnnie; thoughtomator; RightWhale; proudofthesouth; ...

2 posted on 04/20/2008 5:26:22 AM PDT by sig226 (Real power is not the ability to destroy an enemy. It is the willingness to do it.)
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To: sig226

Halloween!

Freaky how they’re spinning in different directions, although why not.


3 posted on 04/20/2008 5:27:32 AM PDT by mtbopfuyn
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To: sig226

WOW! Thank you,sig.


4 posted on 04/20/2008 5:40:06 AM PDT by MEG33 (God Bless Our Military)
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To: mtbopfuyn
Freaky how they’re spinning in different directions, although why not.

Or the one on the left appears to be a long spiral tunnel with a light at the end of it......

5 posted on 04/20/2008 5:47:30 AM PDT by Hot Tabasco
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To: sig226

Bushes fault. The failed policies of the Administration have caused this looming disaster.


6 posted on 04/20/2008 5:50:09 AM PDT by Vio24
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To: sig226
WOW! Cool.

I like this one too, the Association of Lunar & Planetary Observers Picture Of The Day courtesy of Dave Tyler, via alpo-astronomy.org

There's a spot at the upper right that is almost as warm as where Jimmy Carter's soul is going to end up.

7 posted on 04/20/2008 5:57:38 AM PDT by InABunkerUnderSF ("Gun Control" is not about the guns. "Illegal Immigration" is not about the immigration)
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To: sig226

Wow! That’s amazing!!


8 posted on 04/20/2008 6:11:41 AM PDT by KoRn (CTHULHU '08 - I won't settle for a lesser evil any longer!)
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To: mtbopfuyn
spinning in different directions

A question many years ago when Goedel and Einstein were at Princeton was whether there was a net rotation to the universe. Goedel spent no one knows how many hours with astronomical photographs noting the rotation of galaxies, galaxy by galaxy. That was when he was not busy destroying the basis of Logical Positivism. He found there is no net rotation of the universe. Galaxies apparently rotate in all directions with a net rotation of zero.

9 posted on 04/20/2008 7:30:53 AM PDT by RightWhale (Repeal the Law of the Excluded Middle)
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To: sig226

Sublime! Thank you, sig.


10 posted on 04/20/2008 9:30:59 AM PDT by redhead (I want my global warming, and I want it NOW!)
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To: sig226; InABunkerUnderSF

nice!


11 posted on 04/20/2008 10:50:35 AM PDT by mcar
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To: InABunkerUnderSF

Post photos every day from that site, if you want.


12 posted on 04/20/2008 9:43:42 PM PDT by Ciexyz
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To: sig226

btt


13 posted on 04/21/2008 8:09:26 PM PDT by Ciexyz
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