The Hubble at twenty

CSM has a collection of pictures from the most powerful telescope ever built:

Trapped in their mutual orbit around each other, these galaxies will continue to distort and disrupt each other. Sometimes galaxies are close enough to collide. Billions of years from now, they will merge into a single massive galaxy. It is believed that many galaxies including the Milky Way were formed by collisions of several smaller galaxies.


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