How many galaxy are there in universe?
A galaxy is a group of stars, clouds of gas, and dust particles that move together through the universe. The universe has a large number of galaxies, and each carries millions of stars that are bounded by a unique force known as gravitational force. There are approximately 70,000 million stars in the universe. Our solar system is present in the milky way galaxy. Galaxies differ from each other in shape, size, colour, and composition.