KOMPAS.com – The solar system is a collection of celestial bodies consisting of various objects. According to Dr Encyclopaedia Britannica (2015), objects or celestial bodies that revolve around the sun are planets, moons and satellites as well as comets, asteroids, and meteoroids.
The solar system covers the earth and its contents. Located in one of the galaxies called the Milky Way Galaxy.
Then what is the meaning and difference of planets, stars, and satellites?
Here’s an explanation of each of the planets, stars, and satellites:
Definition of planet
In Indonesia Dictionarya planet is a celestial body that orbits a star in a certain path.
Planets can also be said as astronomical objects that orbit large stars to have their own gravity.
The gravitational force on the planet can overcome the rigid force, so the Earth reaches hydrostatic equilibrium with its spherical shape.
Planets are not satellites. Planets can clean their surroundings by sucking or kicking celestial bodies around their orbits.
Also read: Planetesimal Theory: Theory Formation of the Solar System
Definition of star
Reported from Imagine the Universe NASAstars are the most widely recognized astronomical objects and represent the most basic building blocks and galaxies.
The star’s gravity constantly makes the star collapse, only because the pressure of the very hot gas is able to withstand it.
The hot core of the star causes nuclear reactions and produces a large amount of energy out of the star. That energy is called heat and sunlight.
Satellite definition
A satellite is an object in space that orbits another object and will remain at the attraction of another object that is larger.
Some planets have satellites, such as Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.
The types of satellites are divided into two, namely:
- Natural satellites, satellites that already exist in the solar system. For example, the Moon is a satellite of the Earth.
- Artificial satellites, satellites made by humans are then launched using rockets.
Also read: Asteroids, Rocks in the Solar System
Differences between planets, stars and satellites
| Planet | Star | Satellite |
|
Planets are celestial bodies that do not emit heat. |
Stars emit light of heat energy. Because the mass and energy are large enough to burn hydrogen and its isotopes. | Satellites are celestial bodies that do not have their own light source. |
| Planets are celestial bodies that do not emit light | Stars emit light due to fusion reactions. | Satellites move around a particular planet following the orbit of the planet itself. |
| Planets will move around the Sun in the form of rotations and revolutions |
Due to the fusion reaction, the star has a larger size than other celestial objects. |
Also read: Characteristics and Characteristics of Members of the Solar System
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