What happens when two galaxies collide? [video]

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Almost nothing. Yes, you heard me. The two galaxies might form in the end only one galaxy, but at individual level, or at Solar System level, things will very well remain unchanged. Well, in about 6 billion years we won’t see the Milky Way on the sky, but a completely new galaxy.

The reason for this is that the galaxies are comprised from a LOT of empty space, thus the colliding galaxies would simply fly through each other and then merge in a bigger one.

Using the Hubble Space Telescope astronomers were able to create a simulation of what things would be in such a clash of galactic titans. In about 4 billion years the Milky Way and the Andromeda galaxies will dance together in a cosmic collision which will last for about 1.9 billion years after which the newly formed galaxy will be elliptical, and not spiral, like ours is now.

See below our neighbouring galaxies: Andromeda and Triangulum.
colliding-galaxies-milky-way-andromeda-triangulum

One Response to “What happens when two galaxies collide? [video]”

  1. Brave and intelligent Reply 29. Jul, 2013 at 01:03

    So if Life will still exist after the collision if it takes place, won’t there be more radiation and wont the star be bigger since they will be in one mass, won’t it possibly the star mass or size enter Earth’s orbit or when the stars do collide won’t that shift Earth’s orbit voilently or taking it offcourse and a voilent circle?