Formation of our solar system?
Our solar system was formed 4.6 billion years back, Well, since we don't have that much time.. ..let me fast forward the process and tell you about the formation of the solar system. It is believed that our Solar System was formed....when a cloud of dust and gas was disturbed by an explosion of a nearby star called the Supernova. The star exploded with a Bang and its effect traveled in waves all around. These waves squeezed the cloud of dust and gas resulting in its collapse. All the little pieces of matter that started outrunning away from each other....got pulled back together by gravity.
Soon the cloud began spinning at a tremendous speed. And there it was, a beautiful Solar Nebula in the making. Just for some extra information, a Solar Nebula is a large cloud of gas and dust.. ..from which the sun, planets, and other solar system bodies.. ..like asteroids, meteors and moons were formed. Okay, so let's now continue from where we left off! When the spinning slowed down, the centre of the Solar Nebula became hotter and denser, which was surrounded by a disc of gas and dust that was cool at the edges. At the heart of the Nebula, there was a ball of Hydrogen gas....who's pressure and temperature became quite huge and the particles began to fuse together.
There it was, a new, powerful star coming into being....Yes, that was our Sun, shining like a fiery ball! There were infinite number of particles that began to stick together and form clumps. Some clumps got bigger and bigger,forming planets and moons. So now you know how the planets were born, isn't it? It is also believed that since the centre of the Solar Nebula was hot, like Mercury, Venus, Earth, Mars and Jupiter. The rest of the cold planets like Saturn,Neptune, Uranus, etc, were formed at the edges. Did you know that Sun takes up 99% of the Solar System's mass? This means that we are technically living inside the atmosphere of the Sun.
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