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two colliding galaxies
When galaxies collide.
To boldly go... two colliding galaxies.
spiral galaxy Arp 78
Interacting Galaxies Arp 273
Be still, my heart. NGC 6745 shows the results of two galaxies that have been colliding for (only) hundreds of millions of years.
Peculiar Galaxies of Arp 273
Galaxy NGC 474, colliding with the spiral galaxy above, possibly causing the ripple like look.
NGC 3521, Spiral Galaxy