How do other galaxies affect your galaxy?

Answer:

A galaxy is a huge spinning mass of stars in outer space. There are millions of galaxies, each containing billions of stars as well as gas and dust. Our galaxy is called the Milky Way. It contains about 200,000 million stars. :)
First answer by Mika Mania. Last edit by Mika Mania. Contributor trust: 1 [recommend contributor recommended]. Question popularity: 3 [recommend question].