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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.
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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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