Difference between Stars and Planets

Stars vs. Planets

What is Difference between Stars and Planets? Stars and planets are two different types of astronomical objects that can be found in the universe. Both objects are composed of different elements and also vary in their appearance, size and even “behavior”.

Although few would confuse a star with a planet, the truth is that not everyone would know how to explain their differences; for this reason, on this occasion we have decided to explain everything about the difference between stars and planets. Below this post is all about the difference between stars and planets.

Difference between Stars and Planets

If you have doubts about it or just search for a bit more information that complements what you already know, continue reading, and because below you will find everything you need around this interesting topic that probably have already left you homework for the school.


A planet is a large astronomical object that orbits around a star or a stellar rest. This mostly due to its own gravity force and the gravity of the star that is close to it. Usually, the shape of the orbit of the planets is elliptical; but it depends on how the gravitational force of the planet and its star act.

The gravitational force of a planet is strong enough that it can maintain its rounded form, that is, so that the compounds of its material can concentrate in a spherical shape. Also, the planets usually “clean” the wastes that are in the regions near the same; either by absorbing them, by pushing them or by converting them into satellites (in case they have a considerable gravitational force, such as the case of the Earth and the Moon).


On the other hand, the stars are luminous and giant plasma spheres that remain intact in their form thanks to their force of gravitational attraction.

The planets revolve around the stars. A clear example is our planet Earth revolves around the sun. Most stars that have been observed in the universe up to now are much larger than the Sun; some even up to a thousand times larger.

Stars are the main source of energy of the planets, and although they may seem small points in the sky because of their immense distance, some are so enormous that they are able to stand out to the degree that humans have managed to group them into constellations.

Generally, the stars are composed to a greater extent by two gases: hydrogen and helium. Unlike planets that are made of rocks and minerals. In their centers, stars contain atomic energy that is constantly employed to create nuclear fusion; reaction that results in the immense amount of light and heat that these stars emit. Finally, there are many types of stars: white dwarfs, neutron stars, blue stars, red dwarfs, supergiant, and hypergiant.