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Mission Accomplished, Andromeda-Milky Way collision

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Uploaded by on Apr 23, 2008

It is worth noting that there is, as yet, no way to know whether the possible collision is definitely going to happen or not. The radial velocity of the Andromeda galaxy with respect to the Milky Way can be measured by examining the Doppler shift of spectral lines from stars in the galaxy, but the transverse velocity (or "proper motion") cannot be directly measured. Thus, while it is known that the Andromeda galaxy is getting closer to the Milky Way by about 120 km/sec, there is no way to tell whether it is going to collide, or miss. The best indirect estimates of the transverse velocity indicate that it is less than 100 km/sec. This suggests that the dark matter halos, although possibly not the actual disks, of the galaxies will collide.

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  • Andromeda first took a small bite of the milky way to see how tasty it was. It than proceeded to eat the whole thing in one bite. *NOM NOM NOM*

  • Lol the number of stars colliding predicted for the crash is 6. SIX out of  TWO HUNDRED BILLION.... Why? because the stars in galaxies are proportionately spread out like a few baseballs scattered across north america.

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  • @CocacolaCowboy1919 it would be pretty interesting. in the years before the collision Andromeda would take up the the whole night sky

  • @IMAFISHYAY Stars could fall too close to the supermassive black hole at the center

  • What's the background music?

  • Andromeda came out of fucking no were !!!

  • I have a thought. The galaxies are soooo large that even if the earth and our solar system was still around when this happened, I wonder if it would really affect our solar system? Like a bactirum really doesn't move that much if someone threw a big boulder in a lake. It would move but things near it would move in same location. See what I 'm sayin anyone?

  • So the Milky Way could become irregular?

  • surprise 

  • Those two galaxies at the top right are mimicking most of the collision actions XD.

  • @LeeRLang Yummy , cookies and milk flavour!

  • The sun will have destroyed the earth by then.

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