Nebula is a cloud between the stars in outer space. Nebula are made of dust, gas, helium, hydrogen, and plasma. Nebula can be formed from remnants of supernova, stars that have collided with cold objects, stars that have died, and other amazing events. The Nebula has a very beautiful color and a very unique shape. Nebula can make new stars from the squeezed gas, dust, helium, hydrogen, and other substances that create a center of gravity. The longer it gets denser, heavier and gets hotter until it forms a star.
The nebula is extremely large, its typical size being 9,460,800,000,000 kilometers. Imagine how big the Nebula is and how many stars are there in the Nebula.