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erastovalidia [21]
3 years ago
6

Two characteristics about spiral galaxy and elliptical?

Biology
1 answer:
PilotLPTM [1.2K]3 years ago
8 0

Answer:

 Elliptical galaxies, such as M87  have very little gas and dust. ... Both the largest and the smallest known galaxies are elliptical. Very large elliptical galaxies can reach 300 million light years in diameter. Dwarf ellipticals, which are very common, may contain only 1/100,000th as many stars as the Milky Way!

 Most spiral galaxies contain a central bulge surrounded by a flat, rotating disk of stars. The bulge in the center is made up of older, dimmer stars, and is thought to contain a supermassive black hole. Approximately two-thirds of spiral galaxies also contain a bar structure through their center, as does the Milky Way.

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