Question

How does the galaxy move?

Answer 1

Hint : A galaxy may be a huge collection of gas, dust, and billions of stars and their solar systems. A galaxy is held together by gravity. Our galaxy the Milky Way also features a supermassive region within the middle.

Complete Step By Step Answer:
The Milky Way is that galaxy that contains our system , with the name describing the galaxy appearance from the Earth, a hazy band of sunshine seen within the night sky formed from stars that can't be individually distinguished by the eye .
The term Milky Way may be a translation of the Latin via lactea. From Earth, the Milky Way appears as a band because its disk-shaped structure is viewed from within. Galileo first resolved the band of sunshine into individual stars together with his telescope in 1610.
Until the first 1920s, most astronomers thought that the Milky Way contained all the celebs within the Universe. Following the 1920 Great Debate between the astronomers Shapley and Heber Curtis, observations by Hubble showed that the Milky Way is simply one among many galaxies.
The Milky Way may be a barred spiral nebula with an estimated visible diameter of 150-200,000 light-years, a rise from traditional estimates of 100,000 light-years. Recent simulations suggest that a substance disk, also containing some visible stars may extend up to a diameter of just about 2 million light-years.

Note :
But the galaxy itself isn't stationary, but rather moves thanks to the gravity of all the over dense matter clumps and equally, thanks to the shortage of gravity from all of the under dense regions.