Shells

 

Astronomy Picture of the Day: Shells of Stars in Elliptical Galaxy PGC 42871

How do galaxies grow? To help find out, the Hubble Space Telescope was deployed to image the unusual elliptical galaxy PGC 42871.

Astronomy Picture of the Day: The Cat's Eye Nebula from Hubble

To some, it may look like a cat's eye. The alluring Cat's Eye nebula, however, lies three thousand light-years from Earth across interstellar space.

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