Saturday 25 February 2012

life of a massive star


In this universe there are many clouds of helium  and hydrogen called as nebula. Due  to the  inter atomic  gravity they start to vibrate and there is nuclear fusion  due to the heat produced by vibration and a star takes birth .Depending on the mass of star its life is nearly 10 million years when the iron core of the star increases the star explodes forming a hypernova or a supernova after a hypernova or a supernova  if the core  has mass more than 3 solar masses  it becomes a black hole and if less it becomes a neuton  star. When a black hole’s mass becomes 1.4 times solar masses  it turns into a neutron star.

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