Do you know what is a nebula? A nebula is an enormous cloud of dust and gas. Occupying the space between stars and acting as a nursery for new stars, nebulae are made up of dust, basic elements such as hydrogen and other ionized gases. They are formed when gas and dust are thrown out by the explosion of a dying star, such as a supernova, they are vast, sometimes taking up 100 of light years in space. Over time, the hydrogen gas and the nebula is pulled together by gravity and it begins to spin. As the gas spins faster, it heats up and becomes as a protostar. Eventually, the temperature reaches 15 million degrees, and nuclear fusion occurs in the clouds core. The Sun New Star is formed. Thanks for watching.