Friday, March 21, 2014

APOD 3.9 (makeup for 3.7)

This is a photo of two galaxies colliding. When galaxies collide, their stars usually do not. The collisions may, in some cases, take upwards of 100 million years to complete. This particular collision is happening inside Corvus, and while the collision does not destroy the stars in the galaxy, the gravitational pull of one galaxy may rip the other apart. Millions of stars are being born in this region due to the compression of the various gases, caused by the gravitational pull of one galaxy on another. I picked this picture because it's pretty, like Christmas.

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