EVERYTHING ABOUT THE STARS | Formation | Sequence | Fates | Information | Discovery |

      EVERYTHING ABOUT THE STARS

Star is an astronomical object. It is the building blocks of the galaxies. It led to the way for the evolution of the galaxies. Stars contain heavy metals like Carbon, Nitrogen and Oxygen. The stars studies can be done through astronomical studies. It is a luminous spheroid with plasma that are attracted by the force of gravity

. The stars group to form the constellations and asterisms.

Star's formations

     The stars are formed by the clouds of dust that are scattered in the galaxies. For example Orion nebula. The turbulence deep clouds gave rise to the knots where the gas and dust collapse under the gravitational attraction. During the collapse, the centre gets heat up which is called as the Protostar.

It is the hot core which will become a star after some times. The three-dimensional models of the star formation have led us the way to predict the spinning of the collapsing gas and specks of dust to break the blobs in the space. This is the reason why the MILKY WAY galaxy has stars in groups. Not all the collapse led to formations of the Stars, some become planets, asteroids or comets.

Star's Main sequence 

    For a star which is similar to the size of the Sun, it would take 50 million years to mature after it's collapse. But our Sun has maturation time is approximately equal to 10 billion years. The stars are fueled by the nuclear fusion of the hydrogen to the helium in the interiors. The outflow of the energy is around the central regions of the star and the pressure are necessary to keep star collapsing under its own weight. The main sequence stars are the wide range of the luminosities colours and have the smallest stars like the red dwarfs have only 10%mass of the Sun and emit 0.01% of Sun's energy, it has a glowing temperature around 3000K to 4000K. 

Red dwarfs are the most numerous stars in the universe.
Their lifespan is around 10 billion years.On the other hand,Massive stars are called as the Hypergiants.They are a hundred times or more massive than our Sun with the same temperature of 30,000K as like our Sun's temperature. Hypergiants emit hundreds of thousands times more energy than our Sun's energy.It has a lifespan of a  few million years.MilkyWay galaxy has a handful of Hypergiants stars.

Star's Fates 

     The most stars live billion of years.The star fuses with the hydrogen core and the nuclear reactions cease it satisfy the energy production needed.The hydrogen fuse in the shells around the core of the stars.The hot core pushes the outer layer of the star outwards to expand and to cool down.

The red giant star is a massive core that may very hot to support more exotic nuclear reactions that will consume helium.They produce heavier elements like iron.The internal nucleus fires the star to become unstable it is enshrouding itself likes a cocoon of the gas and specks of dusts.

Star's additional information 

   The observable universe has 1×10 power 24 stars.They have all naturally occurring elements heavier than the helium by the stellar nucleosynthesis in the star's lifespan.Some stars formed by Supernova nucleosynthesis it will explode.

The explodes can be formed as the dwarf,neutron stars and also massive black holes.
 Binary and the multi-star of the two or more stars each other in the stable orbitals.These two stars have a very close orbital with the gravitational interaction impact on the evolution.Stars have bounded structures that are star clusters all over the galaxies.
   
These are discovered by the help of James Mc Neil's,a scientist.Hertz sprung Russel diagrams and Messier 78 and NASA s ChandraX-Ray observatory satellites.

*Note: The images in this post may or may not relevant to the topics.