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Ongoing Growth: Galaxies Grab Intergalactic Gas
space.com ^ | 02/06/06 | Ker Than

Posted on 02/06/2006 5:18:18 PM PST by KevinDavis

Astronomers have detected a faint halo of hot gas surrounding and falling into a spiral galaxy located 100 million light-years from Earth.

The discovery provides a long-sought missing link in theories of galaxy formation and helps solve the riddle of where galaxies get the fuel they need to create new stars billions of years after they have already formed.

"What we are likely witnessing here is the ongoing galaxy formation process," said study leader Kristian Pedersen of the University of Copehnhagen, Denmark.

The spherical gas halo was found centered on the nucleus of NGC 5746, a spiral galaxy like our own Milky Way. The halo, not visible in optical wavelengths, has a radius of about 60,000 light-years and was detected with NASA’s Chandra X-ray Observatory.

(Excerpt) Read more at space.com ...


TOPICS: Miscellaneous; News/Current Events
KEYWORDS: galaxies; space
I have a feeling the comments are going to be interesting....
1 posted on 02/06/2006 5:18:18 PM PST by KevinDavis
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To: RightWhale; Brett66; xrp; gdc314; anymouse; NonZeroSum; jimkress; discostu; The_Victor; ...

2 posted on 02/06/2006 5:18:48 PM PST by KevinDavis (http://www.cafepress.com/spacefuture)
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To: KevinDavis

I had some intergalactic gas once.


3 posted on 02/06/2006 5:19:31 PM PST by Nachum
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To: KevinDavis

"Intergalactic gas"? That's what I get when I eat burritos from Taco Bell.


4 posted on 02/06/2006 5:20:23 PM PST by manwiththehands (From a fellow FReeper: Being an "angry" conservative makes me a "fringer".)
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To: KevinDavis

Where does this new gas come from? The question is just as difficult as explaining how a galaxy can create new stars billions of years after the galaxy formed, it just puts the problem over to intergalactic gas.


5 posted on 02/06/2006 5:21:32 PM PST by RightWhale (pas de lieu, Rhone que nous)
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To: KevinDavis

6 posted on 02/06/2006 5:24:00 PM PST by Zuben Elgenubi
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To: KevinDavis
Ooops. Halo not visible in human optical range.


7 posted on 02/06/2006 5:25:21 PM PST by Zuben Elgenubi
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To: KevinDavis
Gotta get my Aleve.
8 posted on 02/06/2006 5:33:07 PM PST by Investment Biker
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To: RightWhale

Agreed. It's not a deux ex machina type of explanation, because the gas is observed, but it does try to explain something using something else which has no explanation.


9 posted on 02/06/2006 10:58:35 PM PST by SunkenCiv (Islam is medieval fascism, and the Koran is a medieval Mein Kampf.)
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"rocket morton takes off again into the wind -- what do you run on rocket morton?
i run on beans, i run on laser beans".


10 posted on 02/06/2006 11:00:12 PM PST by SunkenCiv (Islam is medieval fascism, and the Koran is a medieval Mein Kampf.)
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