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Andromeda galaxy larger than thought-astronomers
Reuters on Yahoo ^ | 5/30/05 | Reuters

Posted on 05/30/2005 6:23:52 PM PDT by NormsRevenge

WASHINGTON (Reuters) - The Andromeda galaxy just got bigger -- three times bigger, astronomers said on Monday.

The galaxy is not actually expanding. But new measurements suggest that the nearest galaxy to our own Milky Way is three times broader than astronomers had thought.

They now believe a thin sprinkling of stars once thought to be a halo is in fact part of Andromeda's main disk.

That makes the spiral galaxy, so close to Earth that it appeared as a fuzzy blob to the ancients, more than 220,000 light-years across -- triple the previous estimate of 70,000 to 80,000 light-years.

It appears that the outer fringes of the disk were made when smaller galaxies slammed together, they told a meeting of the American Astronomical Society in Minneapolis.

The structure is too bumpy to have been formed otherwise, said Rodrigo Ibata of the Observatoire Astronomique de Strasbourg in France.

"This giant disk discovery will be very hard to reconcile with computer simulations of forming galaxies. You just don't get giant rotating disks from the accretion of small galaxy fragments," Ibata said in a statement.

Ibata, Scott Chapman of the California Institute of Technology and colleagues in Britain and Australia worked together using observations from the Keck II telescope in Hawaii.

They studied the motions of about 3,000 stars thought to be a mere halo and not an actual part of the galaxy's disk.

But they are in fact sited in the plane of the Andromeda disk itself and move at a velocity that suggests they are in orbit around the center of the galaxy, Ibata's team said.

Andromeda is 2 million light-years from Earth. A light-year is the distance light travels in a year -- about 6 trillion miles.


TOPICS: Culture/Society; Extended News; News/Current Events
KEYWORDS: andromeda; astronomers; atronomers; galaxy; larger; space; thought
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The Andromeda galaxy just got bigger -- three times bigger, astronomers said on Monday. The galaxy is not actually expanding. But new measurements suggest that the nearest galaxy to our own Milky Way is three times broader than astronomers had thought. This undated X-ray image shows the central portion of the Andromeda Galaxy. (Reuters)


1 posted on 05/30/2005 6:23:52 PM PDT by NormsRevenge
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To: NormsRevenge; Lijahsbubbe; aculeus; dighton
But new measurements suggest that the nearest galaxy to our own Milky Way is three times broader than astronomers had thought.

Andromeda needs to put away the Oreos. Obesity, it's an epidemic of galactic proportions.

2 posted on 05/30/2005 6:29:45 PM PDT by Thinkin' Gal
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To: NormsRevenge
Andromeda is a cool name. Nice picture.
3 posted on 05/30/2005 6:30:40 PM PDT by Red Sea Swimmer (Tisha5765Bav)
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To: NormsRevenge

This is hugh and series set beeber to stunned


4 posted on 05/30/2005 6:31:36 PM PDT by al baby (Father of the Beeber)
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To: NormsRevenge
It's too bad Andromeda isn't brighter. It would actually appear as wide or wider than the moon in the sky.
5 posted on 05/30/2005 6:32:28 PM PDT by mc6809e
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To: NormsRevenge

Just who or what ARE these "thought-astronomers" and how large are they?


6 posted on 05/30/2005 6:33:46 PM PDT by Petronski (A champion of dance, my moves will put you in a trance, and I never leave the disco alone.)
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To: NormsRevenge
"Andromeda is 2 million light-years from Earth. A light-year is the distance light travels in a year -- about 6 trillion miles."

For driving directions and hotel recommendations I like MapQuest.

7 posted on 05/30/2005 6:34:28 PM PDT by billorites (freepo ergo sum)
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To: NormsRevenge
Very interesting. It makes you wonder what other things our astronomers are wrong about.They say this planet has never been visited by space aliens.HMMmn. Makes you wonder doesn't it.
8 posted on 05/30/2005 6:34:38 PM PDT by alienken (Bumper sticker idea- We have God in heaven & a Texan in the whitehouse,LIFE IS GOOD!!)
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To: NormsRevenge
The Andromeda galaxy just got bigger -- three times bigger, astronomers said on Monday.

I think that is caused by galaxy warming.

Seriously, pictures and speculation about the Universe is hypnotically interesting.

9 posted on 05/30/2005 6:36:15 PM PDT by stevem
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To: NormsRevenge
" the nearest galaxy to our own Milky Way is three times broader than astronomers had thought."

Reminds me of my wedding night.

10 posted on 05/30/2005 6:36:22 PM PDT by billorites (freepo ergo sum)
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To: NormsRevenge
The galaxy is not actually expanding.

Unlike Michael Moore.

11 posted on 05/30/2005 6:37:04 PM PDT by Texas Eagle (If it wasn't for double-standards, Leftists would have no standards at all)
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To: NormsRevenge
Someone should remeasure Hillary's ass.
12 posted on 05/30/2005 6:38:13 PM PDT by satchmodog9 (Murder and weather are our only news)
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To: billorites

Oh, thats sad.


13 posted on 05/30/2005 6:42:23 PM PDT by MilspecRob (Most people don't act stupid, they really are.)
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To: NormsRevenge

When are you humans going to learn that size doesn't matter?


14 posted on 05/30/2005 6:43:01 PM PDT by WestVirginiaRebel (Carnac: A siren, a baby and a liberal. Answer: Name three things that whine.)
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To: NormsRevenge

Galactic Warming. Of course we are very close to discovering Universal Warming, and of course, it's Bush's fault.


15 posted on 05/30/2005 6:44:39 PM PDT by feedback doctor (Wimpy Lindsay Graham, I am ashamed of you, you lied to me)
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To: NormsRevenge
Cool. Does this make Andromeda the largest object in the Local Group?

What does the new size of Andromeda do to the collision of Andromeda and the Milky Way, in about 3 billion years? I saw nothing about that in the article. However, if Andromeda's size is from colliding with other galaxies will the collision add more to Andromeda or to the Milky Way? I admit I am fuzzy on the mechanics of the collision, having only vague memories of an Astronomy class and watching the Discovery Channel.
16 posted on 05/30/2005 6:45:20 PM PDT by Talking_Mouse (Indeed I tremble for my country when I reflect that God is just... Thomas Jefferson)
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To: NormsRevenge

Darn, now I gotta order all new Andromedan road maps.


17 posted on 05/30/2005 6:48:18 PM PDT by Larry Lucido
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To: NormsRevenge

What are 'thought-astronomers'?


18 posted on 05/30/2005 6:48:23 PM PDT by snarks_when_bored
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To: Petronski; snarks_when_bored

That's the way the news wire posted the title,, lol. It made me pause for thought, too. :-\


19 posted on 05/30/2005 6:50:34 PM PDT by NormsRevenge (Semper Fi ...... The War on Terrorism is the ultimate 'faith-based' initiative.)
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To: snarks_when_bored; Petronski

"thought-astronomers"

They are like thought-police, but with broader jurisdiction.


20 posted on 05/30/2005 6:50:36 PM PDT by Larry Lucido
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To: NormsRevenge

I think they needed what printers call an "em-dash," rather than a hyphen.


21 posted on 05/30/2005 6:51:36 PM PDT by Petronski (A champion of dance, my moves will put you in a trance, and I never leave the disco alone.)
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To: billorites

LOLOL...giggle...snort.


22 posted on 05/30/2005 6:52:20 PM PDT by Petronski (A champion of dance, my moves will put you in a trance, and I never leave the disco alone.)
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To: NormsRevenge
But new measurements suggest that the nearest galaxy to our own Milky Way

Bzzzt! Once again the MSM gets the wrong answer. A quick search of Google for "nearest galaxies" gives http://www.absoluteastronomy.com/encyclopedia/L/Li/List_of_nearest_galaxies.htm

1. Milky Way Galaxy - home galaxy of Earth
2. Canis Major Dwarf Galaxy - 25,000 ly (satellite of Milky Way)
3. Sagittarius Dwarf - 81,000 ly (satellite of Milky Way)
4. Large Magellanic Cloud - 160,000 ly (satellite of Milky Way)
5. Small Magellanic Cloud - 190,000 ly (satellite of Milky Way)
6. Ursa Minor Dwarf - 205,500 ly (satellite of Milky Way)
7. Draco Dwarf - 248,000 ly (satellite of Milky Way)
8. Sculptor Dwarf - 254,000 ly (satellite of Milky Way)
9. Sextans Dwarf - 257,500 ly (satellite of Milky Way)
10. Carina Dwarf - 283,500 ly (satellite of Milky Way)
11. Fornax Dwarf - 427,000 ly (satellite of Milky Way)
12. Leo II - 701,000 ly
13. Leo I - 890,000 ly
14. Phoenix Dwarf - 1,271,000 ly
15. Barnards Galaxy (NGC 6822) - 1,760,000 ly
16. NGC185 - 2,021,000 ly (satellite of Andromeda)
17. NGC147 - 2,152,000 ly (satellite of Andromeda)
18. Andromeda Galaxy (M31) - 2,363,000 ly

Not counting our own, there are 16 galaxies closer than the Andromeda Galaxy. It took much longer to format the list than to search for it.

23 posted on 05/30/2005 6:54:08 PM PDT by KarlInOhio (Republicans and Democrats no longer exist. There are only Fabian and revolutionary socialists.)
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To: Talking_Mouse; NormsRevenge
What does the new size of Andromeda do to the collision of Andromeda and the Milky Way, in about 3 billion years?

Here's my question: When Andromeda and the Milky Way collide, when will those of us still around start to feel something?

24 posted on 05/30/2005 6:54:15 PM PDT by Larry Lucido
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To: NormsRevenge
Keck on top of Mauna Kea..


25 posted on 05/30/2005 6:54:31 PM PDT by NormsRevenge (Semper Fi ...... The War on Terrorism is the ultimate 'faith-based' initiative.)
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To: NormsRevenge

----the spiral galaxy, so close to Earth that it appeared as a fuzzy blob to the ancients-----

It still looks like a fuzzy blob to the naked eye if you can get into skies dark enough to see it.

Saw it near Ft. Davis, TX once, naked eyed, in my 8-inch dobsonian, and on a 15 inch dob...neat night it was.


26 posted on 05/30/2005 6:54:42 PM PDT by Knitting A Conundrum (Act Justly, Love Mercy, and Walk Humbly With God Micah 6:8)
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To: NormsRevenge

Doggone, I have made some big miscalculations, but this one was a whopper, huh?


27 posted on 05/30/2005 6:55:12 PM PDT by lexington minuteman 1775
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To: Amelia

Here's one for you. ;-)


28 posted on 05/30/2005 6:55:23 PM PDT by Scenic Sounds (Sí, estamos libres sonreír otra vez - ahora y siempre.)
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To: billorites
Reminds me of my wedding night.

That is so wrong! LOL. If your spouse reads that comment it is the dog house ....the dank dark hidden dog house kept for special crimes ....for you.

29 posted on 05/30/2005 6:55:26 PM PDT by spetznaz (Nuclear tipped ICBMs: The Ultimate Phallic Symbol.)
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To: NormsRevenge

Yup.


30 posted on 05/30/2005 6:56:07 PM PDT by snarks_when_bored
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To: Larry Lucido
"thought-astronomers"

They are like thought-police, but with broader jurisdiction.

(rimshot!)

31 posted on 05/30/2005 6:57:18 PM PDT by snarks_when_bored
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To: Petronski

Thanks for the 'em-dash'!


32 posted on 05/30/2005 6:59:25 PM PDT by NormsRevenge (Semper Fi ...... The War on Terrorism is the ultimate 'faith-based' initiative.)
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To: spetznaz
"That is so wrong! LOL. If your spouse reads that comment it is the dog house ....the dank dark hidden dog house kept for special crimes ....for you."

Hey, it's what Mrs. Billorites said to me.

Upon first viewing.

33 posted on 05/30/2005 7:01:21 PM PDT by billorites (freepo ergo sum)
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To: billorites

LOL. Oooops. ;-D


34 posted on 05/30/2005 7:05:54 PM PDT by spetznaz (Nuclear tipped ICBMs: The Ultimate Phallic Symbol.)
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To: Thinkin' Gal

How long will it be till the Rats try to tax it for being too successful?


35 posted on 05/30/2005 7:18:22 PM PDT by GSlob
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Comment #36 Removed by Moderator

RULES, PEOPLE!!!

Andromeda:


37 posted on 05/30/2005 7:32:27 PM PDT by JohnnyZ (Defeat Pat DeWine, RINO Mike DeWine's son! Tom Brinkman for Congress http://www.gobrinkman.com/)
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To: alienken
They say this planet has never been visited by space aliens.HMMmn. Makes you wonder doesn't it.

If this planet ever was visited by space creatures I doubt the government would openly admit it. Wouldn't want to scare the sheeple...

38 posted on 05/30/2005 7:37:31 PM PDT by Reaganwuzthebest
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To: NormsRevenge
This Andromeda, perhaps?

Mrrrrow!

39 posted on 05/30/2005 7:38:30 PM PDT by FierceDraka (The Democratic Party - Aiding and Abetting The Enemies of America Since 1968)
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To: KarlInOhio

You are correct of course but for me personally I would discount the satellite galaxies of the Milky Way and Andromeda itself. Astronomers wouldn't but that's just me. That still leaves 4 closer than Andromeda however so the error is still there.


40 posted on 05/30/2005 7:47:15 PM PDT by xp38
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To: NormsRevenge

I read somewhere that Andromeda is the most distant object that can be seen with the naked eye.


41 posted on 05/30/2005 7:55:10 PM PDT by DManA
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To: Petronski
Just who or what ARE these "thought-astronomers" and how large are they?

Very good question, one would think that anyone with a little education could grasp the meaning of infinity.

42 posted on 05/30/2005 7:55:16 PM PDT by org.whodat
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To: NormsRevenge

With all due respect to science and its actual progress, cosmology is little more than today's secular religion. Nothing can be said about the universe with any certainty; the big silly joke of our era is the seriousness with people talk about the big bang and such stuff.

Everyone secretly knows that when they go to sleep at night, the entire physical unvierse evaporates in the literal blink of an eye.


43 posted on 05/30/2005 8:00:10 PM PDT by Tax Government (Put down the judicial insurrection. Contribute to FR.)
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To: KarlInOhio
The Andromeda Galaxy is the largest "spiral galaxy" to our own Milky Way. However, it is NOT the nearest galaxy to our own, as you pointed out.

The MSM is made up of a bunch of morons that write articles for the masses of morons and they fail to be specific.

44 posted on 05/30/2005 8:22:25 PM PDT by Dont_Tread_On_Me_888 (The Republican'ts have no backbone--they ALWAYS cave-in to the RATs)
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To: alienken

Andromeda is approaching us here, in the Mily Way. One day the two galaxies may collide. Maybe it is approaching faster than we thought?


45 posted on 05/30/2005 9:17:07 PM PDT by Imperialist
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To: KarlInOhio

Now that is what I needed a galaxies list when I was trying to think of a user name.....


46 posted on 05/30/2005 9:20:42 PM PDT by restornu (Apple don't fall far from the tree...Now Apples are toss from the tree..OUR throw away KIDS)
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To: JohnnyZ; FierceDraka
How about a picture of Tyr for the ladies?
47 posted on 05/30/2005 9:24:47 PM PDT by Talking_Mouse (Indeed I tremble for my country when I reflect that God is just... Thomas Jefferson)
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To: Talking_Mouse
Will this do? ;)


48 posted on 05/30/2005 9:31:39 PM PDT by JohnnyZ (Defeat Pat DeWine, RINO Mike DeWine's son! Tom Brinkman for Congress http://www.gobrinkman.com/)
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To: NormsRevenge

The telescopes in the Hawaian Islands are always interesting to visit if you happen to vacation there. You start out in tropical heat and humidity at sea level in a tank top and shorts and get out of the rent-a-car at 10-12,000 feet after only a half hour of driving, not dressed properly for the sudden plunge in temperature! Great, crystalline views!


49 posted on 05/30/2005 9:33:02 PM PDT by DoctorMichael (The Fourth Estate is a Fifth Column!!!!!!!!!!!!!!!!!!!)
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To: NormsRevenge; RadioAstronomer
Could someone, anyone explain to this simpleton: If the universe is supposedly still expanding from an infinitely small, infinitely dense point outward from the original big bang, how anything could be colliding with anything?

Thanks in advance ;^)

FGS

50 posted on 05/30/2005 9:49:03 PM PDT by ForGod'sSake (ABCNNBCBS: An enemy at the gates is less formidable, for he is known and carries his banner openly.)
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