THe life of a star
Stars are Awesome, Spectacular, Marvelous spheres of plasma in space. Living things on Earth see them every night and morning in fact; for our own sun is itself; a star. A star starts out as a cloud of bleak molecular gas. This states of things may remain for ages before one day, it collapses due to its own gravity. This may be triggered by a explosion nearby such as a Supernova or a comet. This is the beginning of a protostar.
The protostar can be seen as a infant or baby star; not quite grown, but recognizable as a star. At this stage in a star's life cycle we see the beginning of rock formations known as planets. One can say that this is the start of a solar or planetary system. This era in a stars life last approximately one million years; short in astronomical terms. The universe being thirteen thousand & eight hundred times older than a million year old protostar.
The next stage for the young star is the tauri star. A tauri star is born when a protostar stop receiving materials from it's gravitational pull. Now it is releasing a lot of energy; a kin to the baby realizes that breast milk is no longer on the menu; though I'm for certain that the two processes are quite different. Now the star is bright, and this is due to the energy from the gravitational pull of the materials falling into the adolescent star. This part of the star's life last about one hundred million years.
Main Sequence Star
Up next is the adult star, all grown up and ready to face the world, or worlds perhaps; introducing the Main Sequence Star . The Main Sequence Star comes in many sizes and colors and even temperatures. We have Red Giants, Brown dwarfs, Red dwarfs, Sun-Like Stars & Super Giants that are blue. This phase in a star's life is when it's a element-making juggernaut, pumping out many elements that power worlds like Earth. This is the longest phase in a stars entire life and it lasts around ten to fifteen billion years. That's older than the universe itself!!! A Main Sequence Star lasts a very long time so it's take awhile before what happens next. When the star meets its maker. Oh yes, even stars meet the grim reaper.
The Death of a Star
Now, many can happen during and after the death of a star. Some results quite beautiful actually. Sometimes Stars explode into Supernovas. Other times they become Supernovas and then collapse into Black Holes. There are times when it skips the whole Supernova steps and go straight to being Black Holes. A star can become a Supernova and then become a Neutron Star. A Neutron Star according to the Oxford Dictionary is "A celestial object of very small radius (typically 18 miles/30 km) and very high density, composed predominantly of closely packed neutrons. Neutron stars are thought to form by the gravitational collapse of the remnant of a massive star after a supernova explosion, provided that the star is insufficiently massive to produce a black hole." Sun-like Stars become Planetary Nebula then White Dwarfs after their time has passed. A Red Dwarf will become a white dwarf. Finally brown dwarfs is the only one who doesn't change; It was born a brown dwarfs, it dies a brown dwarf. There is an array of different outcomes for an array of stars. However, as all things in The World, the star does eventually kick the bucket.
This fact should not bring sadness however, for the circle of life does exist for stars too. Remember in the beginning, the birth of a star can be caused by a Supernova, a Supernova comes from a dead star, therefore one stars death could trigger the birth of many more stars. The life of stars goes on. This is true in life too. People and animals all get old and eventually pass away, but we leave behind offspring to continue our lives for us and in our predecessors we live on forever.
'Astronomy' page explores aspects of Astronomy, Philosophy, Spacelore and other topics about The Universe!