When did these big galaxies first begin to dance?

"Oh my God! Look at that picture over there! Here's the Earth coming up. Wow is that pretty!"

This stunning group of galaxies is far, far away, about 450 million light-years from planet Earth and cataloged as galaxy cluster Abell S0740.

How was the unusual Red Rectangle nebula created?

Blown by the wind from a massive star, this interstellar apparition has a surprisingly familiar shape.