Solar System Lesson Plan, 4Th Graders - A star is born! Protostar stars start out of a nebula. A nebula is a cloud of dirt composed of 97 hydrogen and 3 helium. Inside the nebula gravity reasons the fuel and dust to “clump” together. What can anybody inform me approximately what they recognise about gravity and why it's miles critical to us here on the earth? Gravity is what maintains us all on the ground and from floating into area like the astronauts floating on the moons! As soon as a celebrity is created it's miles first of all referred to as a protostar. Within the protostar degree the celebrity is being born and simply growing similar to when we're all born as babies. Here is a image of what a nebula cloud and protostar appear like. The principle sequence inside the subsequent stage of the megastar we are going to see it start to grow up and end up an grownup superstar. We mentioned how within a celeb is hydrogen and helium that are both styles of gases. Whilst those gases are burned they push outward whilst the forces of gravity push inward. Whilst both of these are equal a star is strong. The maximum important aspect to do not forget at this stage is that the superstar is a kingdom balance. I am going to expose you an instance of what it method to be strong. Absolutely everyone stand up and face the character seated subsequent to you. Certainly one of you may be accomplice a and one might be associate b. Now clasp the arms of the opposite person and push against every other. Did anybody note that it saved each of your bodies strong at the same time as doing this? That is how hydrogen and helium work within a celeb at this level. They emit identical force on every other just like you and your companion have been doing. Within the important series degree the superstar is starting to get definitely hot. At the primary sequence of a stars life it has grown from a touch kid to an grownup. We will think of this stage that the superstar is developing up from a infant to a teen and into early adulthood. Our solar is within the foremost collection of its existence and here is a photo of our sun. .