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The Engineer
Engineering Fields - Engineering Physics - Physics... United States - Member - NY Popular Science - Genetics - Organic Chemistry... Popular Science - Cosmology - New Member Ingeniería en Español - Nuevo Miembro - New Member

Join Date: Feb 2005
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Andromeda may be 3x larger than first thought

05/31/2005 4:18 PM

Scientists believe that the Andromeda galaxy is three times larger than they first thought. That would make it 220,000 light years across. That's a quintillion miles if you're from the US or 2 trillion kilometers for everyone else. Why should we care? Well, it might hit us in 5 billion years.
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BRodda
The Feature Creep

Join Date: Feb 2005
Location: Boston, MA
Posts: 990
#1

Boom

06/01/2005 8:45 AM

I wonder what the survival rate of two galaxies colliding would be for humanity. For some odd reason I think that could be labeled an "extinction level" event.
Of course 5 billion years is a loooonnnng time away.

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Paddy O'Flanigan
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Join Date: Feb 2005
Posts: 255
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#2

Andromeda Units?

06/01/2005 9:16 AM

Hmmmm. 1 mile equals 1.6 kilometers. A quintillion miles should equal 1.6 quintillion kilometers. For you celestial physics geeks, that's about 14 billion AU.
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