All the valuable information i found has been shared here...feel free to comment and Kudos to the scientists and astronomers who found out the info for us

Friday, April 15, 2011

How Stars are formed-Nebulae



Each star that we see in the sky is one of a kind...though they all are formed in the same way,
starting with clouds of dust and gas called as nebula.
So how big should a nebula be in order that a Huge Star is born out of it..?
Nebulas are billions of miles across and they drift through space forming various and spectacular shapes.
Each Nebula is a star nursery very many new stars are in the process of being born.
The gas and dust clouds around a nebula are so thick that the process of star formation are hidden to us.Even with the use of telescopes the birth of a star remains hidden within the nebula.
Until NASA launched the Spitzer Space Telescope.The Spitzer Space Telescope is an infrared telescope that means it only recognizes heat.The heat passes through the thick clouds of a nebula allowing Spitzer to witness the birth of a star.
All we need to make a star is hydrogen,gravity and lots of time for gravity to do its work.
What gravity does is it pulls the the dust and gas into a giant squirling vortex.
As gravity does its work more and more matter comes together and squeezing the matter drives the temperature up.As thousands of years pass the discs of the vortex starts getting thicker and at its center gravity crushes the gas into a super dense and super hot ball which forms the core of a star.At this stage the temperature at the core of a star is almost 15 million degree celsius and at this temperature molecules of gas begin to fuse around the young star and just like that a star is born.
The Creator of life it self is born in such a violent process.

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