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Astronomy Picture of the Day -- Milky Way Galaxy Doomed: Collision with Andromeda Pending
NASA ^ | June 04, 2012 | (see photo credit)

Posted on 06/03/2012 9:08:20 PM PDT by SunkenCiv

Explanation: Will our Milky Way Galaxy collide one day with its larger neighbor, the Andromeda Galaxy? Most likely, yes. Careful plotting of slight displacements of M31's stars relative to background galaxies on recent Hubble Space Telescope images indicate that the center of M31 could be on a direct collision course with the center of our home galaxy. Still, the errors in sideways velocity appear sufficiently large to admit a good chance that the central parts of the two galaxies will miss, slightly, but will become close enough for their outer halos to become gravitationally entangled. Once that happens, the two galaxies will become bound, dance around, and eventually merge to become one large elliptical galaxy -- over the next few billion years. Pictured above is an artist's illustration of the sky of a world in the distant future when the central parts of each galaxy begin to destroy each other. The exact future of our Milky Way and the entire surrounding Local Group of Galaxies is likely to remain an active topic of research for years to come.

June 04, 2012

(Excerpt) Read more at 129.164.179.22 ...


TOPICS: Astronomy; Astronomy Picture of the Day; Science
KEYWORDS: andromeda; apod; astronomy; catastrophism; science
[Credit: NASA, ESA, Z. Levay and R. van der Marel (STScI), and A. Mellinger]

1 posted on 06/03/2012 9:08:38 PM PDT by SunkenCiv
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To: 75thOVI; agrace; aimhigh; Alice in Wonderland; AndrewC; aragorn; aristotleman; Avoiding_Sulla; ...



2 posted on 06/03/2012 9:09:52 PM PDT by SunkenCiv (FReepathon 2Q time -- https://secure.freerepublic.com/donate/)
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To: brytlea; cripplecreek; decimon; bigheadfred; KoRn; Grammy; married21; steelyourfaith; Mmogamer; ...
NOTE: Partial Lunar Eclipse Tonight: Gallery of photogenic past lunar eclipses New England and eastern Canada will miss the entire eclipse since the event begins after moonset from those regions. Observers in western Canada and the USA will have the best views with moonset occurring sometime after mid-eclipse.

3 posted on 06/03/2012 9:11:49 PM PDT by SunkenCiv (FReepathon 2Q time -- https://secure.freerepublic.com/donate/)
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To: SunkenCiv
I am just slightly more worried about this than I am about NASA’s other hobby horse Anthropogenic ( Global Warming, or is it Climate Change?!
4 posted on 06/03/2012 9:14:56 PM PDT by Jim from C-Town (The government is rarely benevolent, often malevolent and never benign!)
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To: SunkenCiv

Bush’s fault.


5 posted on 06/03/2012 9:15:56 PM PDT by steve8714 (Who didn't already know Obama was our first gay President?)
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To: steve8714

LMAO! I guess I’ll have to adjust my maximum time setting in my Delorean!


6 posted on 06/03/2012 9:23:11 PM PDT by TheRhinelander
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To: SunkenCiv

Holy Clap!


7 posted on 06/03/2012 9:30:59 PM PDT by mylife (The Roar Of The Masses Could Be Farts)
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To: SunkenCiv

Impossible to truly tell without long-term measurements from a third-person perspective.

I’m talking about hundreds of millions of years, and a distance of a few thousand light years away.


8 posted on 06/03/2012 9:31:51 PM PDT by wastedyears ("God? I didn't know he was signed onto the system.")
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To: SunkenCiv
The exact future of our Milky Way and the entire surrounding Local Group of Galaxies is likely to remain an active topic of research for years to come.

Should read, "... for billions of years to come."

9 posted on 06/03/2012 9:33:45 PM PDT by dr_lew
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To: SunkenCiv

Question..if all started with a “big bang” from one point then shoun’t all galaxys be expanding away from that point and each other?


10 posted on 06/03/2012 9:37:04 PM PDT by tophat9000 (American is Barack Oaken)
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To: SunkenCiv

This is terrible news! The world populations should have a special tax levied on them to prevent this from happening!


11 posted on 06/03/2012 9:40:19 PM PDT by winner3000 (ss)
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To: tophat9000

You are not supposed to ask questions like that.

Now, go back in to the corner and stay there until we tell you you can leave!

CA....


12 posted on 06/03/2012 9:41:52 PM PDT by Chances Are (Seems I've found that silly grin again....)
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To: SunkenCiv

“George Noory .... call your office.”


13 posted on 06/03/2012 9:45:49 PM PDT by jmax (Be warned....I'm armed. Round is chambered, full magazine is inserted, safety is off.)
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To: tophat9000; Chances Are
>> if all started with a “big bang” from one point then shoun’t all galaxys be expanding away from that point and each other?

> You are not supposed to ask questions like that.

In general you're correct, the universe is expanding.

However, in the expansion, there's still lots of opportunity for individual pieces to mix and recombine, dance around each other, etc. That's how structures like spiral galaxies formed in the first place -- they weren't created as spirals and so forth from the beginning -- they gained their shapes over immense stretches of time. On a smaller scale, explosions of huge stars or groups of stars stir the pot, black holes create distortions, etc. It's incredibly slow and stately, one might say graceful, in the literal sense of being an expression of God's Grace.

The Creation is beyond our comprehension, but it sure is pretty, and fun to marvel at.

14 posted on 06/03/2012 9:54:01 PM PDT by dayglored (Listen, strange women lying in ponds distributing swords is no basis for a system of government!)
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To: dayglored

“However, in the expansion, there’s still lots of opportunity for individual pieces to mix and recombine, dance around each other, etc.”

That’s what I also learned about the local bar down the street!


15 posted on 06/03/2012 10:14:59 PM PDT by Jack Hydrazine (It's the end of the world as we know it and I feel fine!)
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To: Jack Hydrazine
> That’s what I also learned about the local bar down the street!

I think that may have more to do with the distortions caused by black holes... ;-)

16 posted on 06/03/2012 10:38:04 PM PDT by dayglored (Listen, strange women lying in ponds distributing swords is no basis for a system of government!)
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To: tophat9000

There is no point in the universe which is the center of expansion. The universe is LIKE the surface of a sphere which is expanding ... every point on the surface is equivalent, and each point sees everything receding from it.

Ah, but how then can the Andromeda Galaxy be approaching us? The answer is that it is nearby, and the expansion is reflective of a tendency over a much larger scale. The collision of Andromeda with the Milky Way is a local event, like an asteroid strike on the earth.


17 posted on 06/04/2012 12:01:38 AM PDT by dr_lew
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To: Chances Are
You are not supposed to ask questions like that.

Don't wallow in your own ignorance. Just a tip.

18 posted on 06/04/2012 12:03:53 AM PDT by dr_lew
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To: SunkenCiv

The Milky Way has already collided with several other galaxies.

Still here.


19 posted on 06/04/2012 12:04:29 AM PDT by <1/1,000,000th%
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To: dr_lew; Chances Are
"Don't wallow in your own ignorance. Just a tip."



Then take off every Zig.

For great justice.

20 posted on 06/04/2012 1:59:22 AM PDT by shibumi (Cover it with gas and set it on fire.)
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To: <1/1,000,000th%
"The Milky Way has already collided with several other galaxies. Still here"


Yeah, but you should see what happened to the insurance rates.
21 posted on 06/04/2012 2:12:38 AM PDT by shibumi (Cover it with gas and set it on fire.)
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To: steve8714

22 posted on 06/04/2012 3:24:11 AM PDT by JRios1968 (I'm guttery and trashy, with a hint of lemon. - Laz)
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To: SunkenCiv
The NASA "Picture of the Day" is usually quite interesting and informative. This one is not. I fail to see how NASA can include "Pictured above is an artist's illustration" as a "picture". This is particularly confusing, since most of the "sideways" velocity responsible for the intersection is speculation, not observation.
23 posted on 06/04/2012 4:06:47 AM PDT by norwaypinesavage (Galileo: In science, the authority of a thousand is not worth the humble reasoning of one individual)
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To: SunkenCiv

That’s an awful lot of space running smack dab into another whole lot of space...


24 posted on 06/04/2012 4:33:58 AM PDT by Caipirabob (I say we take off and Newt the site from orbit. It's the only way to be sure...)
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To: SunkenCiv

25 posted on 06/04/2012 7:02:08 AM PDT by martin_fierro (< |:)~)
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To: SunkenCiv

I guess I have a long time to get ready.


26 posted on 06/04/2012 7:06:46 AM PDT by bmwcyle (Romney - not Obama - not a Conservative - not a real Christian)
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To: shibumi

OK, well you see there? I learned somethin’

“We’re all ignorant, just on different subjects” - Will Rogers


27 posted on 06/05/2012 7:17:06 PM PDT by dr_lew
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