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Astronomy Picture of the Day -- A Blue Bridge of Stars between Cluster Galaxies
NASA ^ | July 15, 2014 | (see photo credit)

Posted on 07/15/2014 2:02:13 PM PDT by SunkenCiv

Explanation: Why is there a blue bridge of stars across the center of this galaxy cluster? First and foremost the cluster, designated SDSS J1531+3414, contains many large yellow elliptical galaxies. The cluster's center, as pictured above by the Hubble Space Telescope, is surrounded by many unusual, thin, and curving blue filaments that are actually galaxies far in the distance whose images have become magnified and elongated by the gravitational lens effect of the massive cluster. More unusual, however, is a squiggly blue filament near the two large elliptical galaxies at the cluster center. Close inspection of the filament indicates that it is most likely a bridge created by tidal effects between the two merging central elliptical galaxies rather than a background galaxy with an image distorted by gravitational lensing. The knots in the bridge are condensation regions that glow blue from the light of massive young stars. The central cluster region will likely undergo continued study as its uniqueness makes it an interesting laboratory of star formation.

July 15, 2014

(Excerpt) Read more at 129.164.179.22 ...


TOPICS: Astronomy; Astronomy Picture of the Day; Science
KEYWORDS: apod; astronomy; haltonarp; science; sdssj15313414
[Credit: NASA, ESA, G. Tremblay (ESO) et al.; Acknowledgment: Hubble Heritage Team (STScI/AURA) - ESA/Hubble Collaboration]

1 posted on 07/15/2014 2:02:13 PM PDT by SunkenCiv
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To: brytlea; cripplecreek; decimon; bigheadfred; KoRn; Grammy; steelyourfaith; Mmogamer; dayglored; ...
The Big One

2 posted on 07/15/2014 2:03:53 PM PDT by SunkenCiv (https://secure.freerepublic.com/donate/)
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To: SunkenCiv

Thank You. Beauty beyond words in that photo.


3 posted on 07/15/2014 2:10:23 PM PDT by no-to-illegals (Scrutinize our government and Secure the Blessing of Freedom and Justice)
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To: SunkenCiv

Is it a rainbow bridge?


4 posted on 07/15/2014 2:12:00 PM PDT by DannyTN (I)
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To: SunkenCiv

I’d like to know more about that really red galaxy on the right.


5 posted on 07/15/2014 2:15:11 PM PDT by UnbelievingScumOnTheOtherSide (HELL, NO! BE UNGOVERNABLE! --- ISLAM DELENDA EST)
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To: DannyTN

6 posted on 07/15/2014 2:18:49 PM PDT by UnbelievingScumOnTheOtherSide (HELL, NO! BE UNGOVERNABLE! --- ISLAM DELENDA EST)
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To: SunkenCiv
curving blue filaments that are actually galaxies far in the distance

Once upon a time in a galaxy far far away...

7 posted on 07/15/2014 2:26:41 PM PDT by MUDDOG
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To: SunkenCiv
Galaxies suck squiggly blue filaments
8 posted on 07/15/2014 2:37:45 PM PDT by BlueDragon
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To: UnbelievingScumOnTheOtherSide

It’s Laz’ favorite galaxy, ‘nough said.


9 posted on 07/15/2014 3:12:30 PM PDT by SunkenCiv (https://secure.freerepublic.com/donate/)
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To: DannyTN

:’)


10 posted on 07/15/2014 3:13:03 PM PDT by SunkenCiv (https://secure.freerepublic.com/donate/)
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To: no-to-illegals

:’)


11 posted on 07/15/2014 3:13:21 PM PDT by SunkenCiv (https://secure.freerepublic.com/donate/)
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To: SunkenCiv; bigheadfred

It doesn’t say how far away it is. But I’m glad that with all that chaos, we’re not close enough for it to affect us.

That is truly a lovely, bejeweled image of the bright, young, new stars forming around the twin elliptical galaxies.

Thank you, Mr. Civilizations.

Hey, I miss bigheadfred. Yeah, he is a little strange, but he is kind and funny.


12 posted on 07/15/2014 3:50:04 PM PDT by TheOldLady
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To: SunkenCiv
The Einstein Ring phenomena is fundamental to the mind's coming to grips with the features in this field of view, a spectacularly deep sky image. Many objects seemingly closer in it are likely to be in fact much more distant than the larger cluster berycentered structures, warping and magnifying their older backgrounds.

But that's, of course, "academic," as they say. It will require a careful census, piece by piece, a spectrographic structural and redshift analysis - to create an accurate 3D model.

Long experience pouring over these deep-sky zoos has me believing the "Einstein Ring" and arc light bending plays a far bigger role in creating the end results we see here, far, far away. It's incredible, of course, but so is the process of long-term exposure of these fields subtending such small fractional degrees of arc.

Psalm 8 immediately comes to mind, and the earlier parts of Romans.

13 posted on 07/15/2014 4:00:37 PM PDT by Prospero (Si Deus trucido mihi, ego etiam fides Deus.)
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To: TheOldLady

I miss him too.


14 posted on 07/15/2014 4:13:53 PM PDT by SunkenCiv (https://secure.freerepublic.com/donate/)
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To: SunkenCiv

I figured. You and he were plenty close here on FR.


15 posted on 07/15/2014 4:55:55 PM PDT by TheOldLady
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