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Milky Way Expected to Survive a Beating
Space.com on Yahoo ^ | 9/7/09 | Clara Moskowitz

Posted on 09/07/2009 11:35:33 AM PDT by NormsRevenge

Though the Milky Way is taking a good beating from nearby mini-galaxies that sometimes slam into it, our galaxy is not likely to de destroyed by this process as some scientists had predicted, a new study finds.

Circling around the Milky Way are between 20 and 25 known satellite dwarf galaxies, which are smaller clumps of stars bound in orbit around the Milky Way by gravitational attraction.

Some pessimists predicted the Milky Way was doomed to a grizzly death by dismemberment if enough of these galaxies collide with it. In fact, scientists think many satellite galaxies have already rammed into the Milky Way, though so far it has endured.

A new computer simulation indicates that rather than tearing apart a galaxy, collisions with dwarf galaxies serve to puff up the host's pancake-shaped galactic disk. Indeed, evidence of this puffiness has been found in the form of rings and flares of stars around the edges of other galaxies' disks.

"Our simulations showed that the satellite galaxy impacts don't destroy spiral galaxies — they actually drive their evolution, by producing this flared shape and creating stellar rings — spectacular rings of stars that we've seen in many spiral galaxies in the universe," said study leader Stelios Kazantzidis, an astronomer at Ohio State University.

Though our galaxy may not be in danger from dwarf galaxies, astronomers do expect it to eventually collide with the nearest full-size galaxy, Andromeda. In a few billion years, the two spirals should smash into each other head on.

"The collision with Andromeda is a collision between two essentially equal-mass galaxies, whereas satellite bombardment involves encounters with much smaller systems compared to the Milky Way," Kazantzidis told SPACE.com.

(Excerpt) Read more at news.yahoo.com ...


TOPICS: Astronomy; Chit/Chat; Science
KEYWORDS: beating; catastrophism; expected; grizzlydeath; milkyway; survive
Whew!
1 posted on 09/07/2009 11:35:34 AM PDT by NormsRevenge
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The Milky Way is seen during the Perseid shower above the Los Padres National Forest in Frazier Park, California, August 12, 2009. The Perseid meteor shower is sparked every August when the Earth passes through a stream of space debris left by Comet Swift-Tuttle. Perseid meteors are bright, and often leave luminous trails of gas. REUTERS/Mario Anzuoni (UNITED STATES ENVIRONMENT SCI TECH)


2 posted on 09/07/2009 11:36:12 AM PDT by NormsRevenge (Semper Fi ... Godspeed .. Monthly Donor Onboard)
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To: NormsRevenge
Some pessimists predicted the Milky Way was doomed to a grizzly death...

Shouldn't that be "grisly"? Or will the galaxy be torn apart by grizzly bears?

3 posted on 09/07/2009 11:37:18 AM PDT by rabscuttle385 (So many Communists, so little time.)
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To: rabscuttle385

a brief paws while I panda that one.


4 posted on 09/07/2009 11:38:56 AM PDT by NormsRevenge (Semper Fi ... Godspeed .. Monthly Donor Onboard)
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To: rabscuttle385

5 posted on 09/07/2009 11:41:14 AM PDT by billorites (freepo ergo sum)
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To: rabscuttle385

6 posted on 09/07/2009 11:41:24 AM PDT by billorites (freepo ergo sum)
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To: NormsRevenge; KevinDavis

bump


7 posted on 09/07/2009 11:43:42 AM PDT by GeronL (http://libertyfic.proboards.com ............. http://tyrannysentinel.blogspot.com)
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To: NormsRevenge

Looks like a ready-made excuse for some sort of government program...the Galaxy Collision Interdiction Act of 2009. Everyone can be taxed for the purpose of filing suit against the interloper galaxy.


8 posted on 09/07/2009 11:44:23 AM PDT by Oldpuppymax (AGENDA OF THE LEFT EXPOSED)
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To: rabscuttle385

did that “grizzly” come from the Space.com reporter??


9 posted on 09/07/2009 11:44:37 AM PDT by GeronL (http://libertyfic.proboards.com ............. http://tyrannysentinel.blogspot.com)
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To: NormsRevenge

Why would you beat a candy bar?


10 posted on 09/07/2009 11:45:31 AM PDT by Lurkina.n.Learnin
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To: GeronL

Yes.

Someone used spell check in lieu of actually proofreading the article.


11 posted on 09/07/2009 11:46:01 AM PDT by rabscuttle385 (So many Communists, so little time.)
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To: rabscuttle385

I never tire at the amusement I derive from the lack of linguistic skill evident from so many supposedly “educated” people. Grizzly, indeed-!!


12 posted on 09/07/2009 11:47:17 AM PDT by imjimbo (The constitution SHOULD be our "gun permit")
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To: rabscuttle385
Shouldn't that be "grisly"? Or will the galaxy be torn apart by grizzly bears?

-PJ

13 posted on 09/07/2009 11:47:19 AM PDT by Political Junkie Too (Comprehensive congressional reform legislation only yields incomprehensible bills that nobody reads.)
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To: NormsRevenge
Whew, indeed.

Hopefully, we have no need for a "star czar."

14 posted on 09/07/2009 11:53:00 AM PDT by Jagdgewehr
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To: 75thOVI; aimhigh; Alice in Wonderland; AndrewC; aragorn; aristotleman; Avoiding_Sulla; BBell; ...
OTOH, the Butterfingers galaxy is likely to self-destruct...
 
Catastrophism
 
· join · view topics · view or post blog · bookmark · post new topic ·

15 posted on 09/07/2009 11:59:28 AM PDT by SunkenCiv (https://secure.freerepublic.com/donate/__Since Jan 3, 2004__Profile updated Monday, January 12, 2009)
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To: NormsRevenge
a brief paws while I panda that one.

Go to your room!

;<)

16 posted on 09/07/2009 12:07:03 PM PDT by Eaker (If you have a problem and If explosives are an option then explosives are THE answer.)
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To: NormsRevenge

We must be Politically Correct!

They are Little Galaxys! And No! I'm not Grumpy!

17 posted on 09/07/2009 12:17:50 PM PDT by Young Werther ("Quae Cum Ita Sunt - Julius Caesar "Since these things are so!">)
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To: NormsRevenge

These are Hubble images of colliding galaxies, which are more common than one might suspect.

The photo credit for the image in your post indicates that it was taken near Frazier Park, probably from the parking lot near the top of Mount Pinos. This is a great location for viewing the night sky. If you drive up on the night of a new moon, or a weekend night closest to the new moon, when the sky will remain dark all night long, you will find many enthusiasts with an array of telescopes. Any one of them will be happy to have you observe the target they are viewing. I hope the development of Tejon Ranch will make judicious use of lighting for the sake of preserving the night view from this spectacular location.

18 posted on 09/07/2009 12:47:37 PM PDT by concentric circles
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To: rabscuttle385
Bares definitely.
19 posted on 09/07/2009 12:50:56 PM PDT by PIF
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To: NormsRevenge
Some pessimists predicted the Milky Way was doomed to a grizzly death by dismemberment if enough of these galaxies collide with it.

Most likely suspects are the Ursa Minor Dwarf, Ursa Major I Dwarf and the Ursa Major II Dwarf galaxies.

20 posted on 09/07/2009 12:55:03 PM PDT by KarlInOhio ("I can run wild for six months ...after that, I have no expectation of success" - Admiral Obama-moto)
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To: Howlin; Sparko; GeronL; Lawdoc; Carlucci; Zoe Brain; callisto; scottinoc; Movemout; markman46; ...
This site is losing it's touch.. Normally someone would say it is Bush's fault...



For other space news go to: http://www.spacetoday.net
21 posted on 09/07/2009 4:49:01 PM PDT by KevinDavis (Can't Stop the Signal!)
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To: KevinDavis

lol. I doubt that 9 of 10 DUmmies would even blame that on Bush


22 posted on 09/07/2009 4:58:18 PM PDT by GeronL (http://libertyfic.proboards.com ............. http://tyrannysentinel.blogspot.com)
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To: KevinDavis

If Bears are involved it is Lovie Smith’s fault.


23 posted on 09/07/2009 5:02:10 PM PDT by Harmless Teddy Bear (I miss the competent fiscal policy and flag waving patriotism of the Carter Administration)
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To: concentric circles

Alot of 2nd & 3rd generation stars in those dark areas about halfway out in all these spirals.

That means planets with metals, with metals neccessary for technological life.

‘Could be one or maybe a couple of civilizations out there.

‘Wonder if they perceive of God....


24 posted on 09/07/2009 7:26:13 PM PDT by onedoug
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To: NormsRevenge

Why am I just learning of this now? This should have been something taught in junior high school.


25 posted on 09/07/2009 7:29:01 PM PDT by wastedyears (The best aid we could ever give Africa would be thousands of rifles to throw out their own dictators)
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To: wastedyears
Why am I just learning of this now? This should have been something taught in junior high school.

It probably was. I was too busy trying to look up Carla's skirt to pay attention to teachers.

26 posted on 09/07/2009 7:31:29 PM PDT by Richard Kimball (We're all criminals. They just haven't figured out what some of us have done yet.)
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To: Richard Kimball
And Peggy's

and Jenny's

and Belinda's

and Linda's

and Susan's

27 posted on 09/07/2009 7:32:56 PM PDT by Richard Kimball (We're all criminals. They just haven't figured out what some of us have done yet.)
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To: Richard Kimball

Oh, and Anna’s. Can’t forget Anna.


28 posted on 09/07/2009 7:33:29 PM PDT by Richard Kimball (We're all criminals. They just haven't figured out what some of us have done yet.)
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To: Richard Kimball

Did I mention Teri?


29 posted on 09/07/2009 7:34:19 PM PDT by Richard Kimball (We're all criminals. They just haven't figured out what some of us have done yet.)
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To: Richard Kimball

There was a girl I went to high school with whose name is Ann or Anna, though I might not be correct. She’s so far the most unreal girl I’ve ever seen.


30 posted on 09/07/2009 7:36:21 PM PDT by wastedyears (The best aid we could ever give Africa would be thousands of rifles to throw out their own dictators)
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