elliptical galaxies
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Shell Galaxy Reveals Its Onion-Like Layers to Dark Energy Camera
Behold a galactic onion: the shell galaxy NGC 3923, spotted by the Cerro Tololo Inter-American Observatory’s Dark Energy Camera (DECam) at a distance of about 70 million light-years from Earth. Shell galaxies make up approximately 10% of all elliptical galaxies, one of the three main galaxy types. The other two types are spiral galaxies, like…
