Why do eliptical galaxies have no arms?

or:Why do eliptical galaxies have no arms?or:There are lots of ideas about how and why things happen, but nobody knows anything for sure. One group s

or:Why do eliptical galaxies have no arms?

or:There are lots of ideas about how and why things happen, but nobody knows anything for sure. One group says gravity and fusion power everything but they can't predict anything, another group says electricity powers everything but they can't explain where the electricity is generated.

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