Pity the ravaged galaxy known as C153. As far as astronomers can tell, this eviscerated body once resembled a grand spiral galaxy like our Milky Way, its several slender, starlit arms wrapping around a brilliant disk. That was before the distant galaxy began crashing through a crowded cluster of galaxies, an encounter that has ripped away most of C153’s gas and left the galaxy with a single, skeletal arm.
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