pretty rare people can observe the interesting phenomenon as a supernova.But this is not an ordinary birth of a star, because in our galaxy are born annually to ten stars.A supernova - a phenomenon that can be seen only once in a hundred years.So bright and beautiful stars die.
To understand why there is an explosion of a supernova, you need to go back to the birth of stars.The hydrogen flying space which is gradually collected in the cloud.When the cloud is large enough in his heart starts to gather compacted hydrogen, and the temperature is gradually increased.Under the influence of gravity is going to the core of a future star, where due to high temperature and increasing gravity begins to take place the reaction of thermonuclear fusion.How much hydrogen can draw to itself the star depends on its future size - from the red dwarf to giant blue.Over time, the balance of work established star's outer layers to the core under pressure, and the kernel expands due to fusion energy.
Star is a kind of fusion reactor, and, like any reactor someday she runs out of fuel - hydrogen.But for us to see how a supernova exploded, it should take a little more time, because instead of hydrogen in the reactor formed another fuel (helium), which will start to burn star, turning it into oxygen and then carbon.And so it will continue until the star's core is formed of iron, which, if not thermonuclear reaction releases energy and consumes it.Under these conditions, and can cause an explosion of a supernova.
nucleus becomes heavier and colder, resulting in lighter upper layers begin to fall on him.Again, the reaction of thermonuclear fusion starts, but this time faster than normal, resulting in a star explodes, scattering into space its matter.Depending on the size of the star, after it may also remain small "stars".The most famous of them - black holes (a substance with extremely high density which has a very large force of gravity, and can emit light).Such formations are after a very big stars who have managed to produce fusion to very heavy elements.Stars smaller leave behind neutron iron or small stars that emit almost no light, but also have a high density of matter.
new supernovae are closely related, because the death of one of them can mean the birth of a new one.This process continues indefinitely.Supernova spreads into the surrounding space, millions of tons of matter, which is again going into the clouds and begin to form new celestial body.The scientists claim that all the heavy elements that are found in our solar system, the Sun during his Birth "stolen" from the exploded star once.Nature is amazing, and the death of something one always means the birth of something new.In the open space matter decomposes, and in the stars formed, creating a great balance of the universe.
