What is galaxy define briefly

1.	What is galaxy define briefly
Answer» A galaxy is 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 has a supermassive black HOLE in the middle. When you LOOK up at stars in the night sky, you're seeing other stars in the Milky Way!!

Answer»

A galaxy is 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 has a supermassive black HOLE in the middle. When you LOOK up at stars in the night sky, you're seeing other stars in the Milky Way!!