How and why do galaxies collide?

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Offline thedoc

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How and why do galaxies collide?
« on: 22/04/2015 09:41:17 »
How and why do galaxies collide if the universe is expanding?
Asked by Rich Baker


                                        Visit the webpage for the podcast in which this question is answered.

[chapter podcast=1001036 track=15.04.21/Naked_Scientists_Show_15.04.21_1003552.mp3]  ...or Listen to the Answer[/chapter] or [download as MP3]

« Last Edit: 22/04/2015 09:41:17 by _system »