Monday, January 05, 2009

What's faster & more massive than the Milky Way?

Why the new Milky Way - that's what! Astronomers using the National Science Foundation's Very Long Baseline Array of the Milky Way say our home Galaxy is rotating about 100,000 miles per hour faster than previously understood. And basic physics tells us that if the spin is greater than the mass must be as well. 50% more it would appear. And the speed? Let me tell you about the speed! The new observations indicate, we're moving at about 600,000 miles per hour in our Galactic orbit, up from the previous estimate of 500,000 miles per hour. Plus the extra mass puts the Milky Way on par with the Andromeda Galaxy.

The downside to the extra mass is that mass makes a collision with Andromeda or another galaxy in our local group much more likely.....

Science Daily has a real good article on this new finding. < - more ->

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