Brief Info On Formation Of Stars And Its Death

Knowing the age and formation of stars can be helpful to astrophysicists when trying to know the age of a galaxy. Formation of a star takes years and the life span of a star takes even more years, in most cases billions of years. The larger a star the shorter it’s the life span and vice versa.

The milky way is bombarded with millions of stars. At night the stars marvel the earth with its beautiful shiny light. People often have a mythical thought whenever Stars are being mentioned as there are many stories about stars in ancient history.

Red dwarf stars [a name given to the smallest stars] are without question the most widely spread stars in the universe. And they have an impressive life span of up to a trillion years.

The Hypergiant stars [largest stars] is a hundred times more massive than the sun and emits energy greater than the sun too. There are not much of Hypergiants left in the universe, the milky way galaxy has a few of them left anyway. But the giant star can’t live as long as our red dwarfs, it can only live up-to millions of years.


Like every great thing in the universe, legends begin in a small simple phase. Stars come from clouds of dust and gas. When these gases (mostly hydrogen) collides together it forms a clump. The clump will pull more gases into itself by gravitation. As the gases collides, the mass of the clumps increase and energy is released. The centre of the clumps becomes even hotter as each collides.

Star formation can take years, after millions of years of gases bumping into clumps, it becomes dense and that’s when it’s called a Protostar. The protostar by gravitation, pull even more gas to itself. When the protostar becomes well heated up to its brim, it blasts out the remaining dust and gas surrounding it in order to stabilize. Then the protostar can now be referred to as a young star or a main-sequence star. It will continue to emit energy and shine until it burns up its hydrogen fuel. The burning up of fuel depends on how large the Star became.


The death of a star differs according to the size of the star, like a medium star that has used up its fuel will shrink and become 10 times less wide than it used to be. It’s then called the white dwarf. It will remain that way for a long time probably years until it will stop shining light. That’s when it’s called a black dwarf and it will remain dark forever.

Massive stars like Hypergiants will go into supernovae [biggest explosion in space] and the centre of the star will turn into a black hole or a neutron star. The object turns to depend on the size of the star, stars that a few times larger than the sun mostly turn into neutron stars. Those that are even larger becomes a black hole.

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