Question

This is a spiral galaxy. The material of this galaxy is concentrated in the disk. The disk is rotating. If it moved fast enough for you to see, based on this view, how would you expect the galaxy to move

Answer 1

This is a spiral galaxy. The material of this galaxy is concentrated in the disk. The disk is rotating. If it moved fast enough for you to see, based on this view, how would you expect the galaxy to move Before delving into an answer, it is important to note that the spiral arms of galaxies are not fixed, solid objects; rather, they are patterns of bright stars and gas clouds within the overall form of the galaxy.

What is spiral galaxy?

As a type of galaxy that Edwin Hubble first identified in his 1936 book The Realm of the Nebulae, spiral galaxies are a component of the Hubble sequence. The majority of spiral galaxies are made up of a bulge, or core collection of stars, and a flat, revolving disk filled with stars, gas, and dust. They frequently have a much fainter halo of stars surrounding them, many of which are found in globular clusters.

The spiral features that radiate from the galactic disc's core and give spiral galaxies their name. The young, hot OB stars that reside in the spiral arms, which are locations of active star formation, make them brighter than the disc around them.

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