Difference between star and planet!!

 

Difference between star and planet!!

A star is a celestial body that generates light and heat through nuclear fusion in its core. It is massive enough to sustain this process, and is therefore self-luminous. A star's gravity is also strong enough to hold in its atmosphere and any orbiting planets.

Stars are actually made of hydrogen and helium gas.  In a typical star, two hydrogen atoms combine to form one helium atom and this process is called fusion.  Under this process some matter is converted into energy.  This energy comes from stars in the form of light and radiation.  So the stars are actually bright.  They have their own light which they produce by the process of fusion.

Sun is a star.  There are also stars millions of times larger than the Sun in the Universe and in our Milky Way Galaxy.

The solar system is a star system that has a sun-like star at its center and planets revolve around it.  There are many star systems in the universe that have a star at the center and planets revolve around them.

 What is a planet?  

A planet is a celestial body that orbits around a star, is spherical in shape, and has cleared its orbit of other debris. It is large enough to have become round due to the force of its own gravity, but not massive enough to sustain nuclear fusion in its core, like a star. There are eight planets in our Solar System: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.

Planets are actually celestial bodies that are spherical and usually revolve around a star. For example, our Earth that revolves around the Sun.  Planets do not have their own light because they do not undergo the fusion process that stars do.  Planets reflect the light of their stars around which they revolve.  Planets can be made of rock or gas.  For example Earth or Mars which are rocky planets or Jupiter and Saturn which are gas giants.

In summary, the main difference between a star and a planet is their size, internal structure, and energy source. A star generates light and heat through nuclear fusion in its core, whereas a planet does not have enough mass to sustain this process and instead reflects the light of its star. A star's gravity is strong enough to hold in its atmosphere and any orbiting planets, while a planet's gravity is not strong enough to hold in a significant atmosphere. The distinction between a star and a planet is crucial in understanding the dynamics and evolution of our solar system and the universe as a whole.