Hey friends! Are you wondering where I am?
Well, I am in space but hey, I have
traveled 4.6 billion years back in time,..
..exactly when our Solar System was formed!
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.
Zoom in!
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 out
running 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. 
Ahaan, 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.
The rocks that belong to Mars 
have been found on Earth. 
And guess what, we didn't bring them here.
Does that make you raise your eyebrows, haan?
Time for me to go back to my Earth!
Tune in next time for more fun facts.
This is me Zooming out!
