Our Sun is not unique in the universe. It is a common middle-sized yellow star which scientists have named Sol, after the ancient Roman name. This is why our system of planets is called the Solar System. There are trillions of other stars in the universe just like it. Many of these stars have their own systems of planets, moons, asteroids, and comets.The Sun was born in a vast cloud of gas and dust around 5 billion years ago. Indeed, these vast nebulae are the birth places of all stars. Over a period of many millions of years, this gas and dust began to fall into a common center under the force of its own gravity.
At the center, an ever growing body of mass was forming. As the matter fell inward, it generated a tremendous amount of heat and pressure. As it grew, the baby Sun became hotter and hotter. Eventually, when it reached a temperature of around 1 million degrees, its core ignited, causing it to begin nuclear fusion.
When this happened, the Sun began producing its own light, heat, and energy.
Could you imagine our planet without a sun? Do you think people could survive without the sun?
No people cannot survive without the sun. We need the sun for plants to grow. Dominik
ReplyDeleteWe need the sun because it gives light and keeps us warm
ReplyDelete-Javier
we need sun because of the light to help with the plants.
ReplyDeletematthew
the sun is vare vare vaer howch it is howcher than aney planit all of it is fire ife you go clost you get vare hot it can all sow kill you and get bernd do not look at the sun it can bern your isse
ReplyDelete-javier wilcox