Components of the planets: Everything you need to know


The solar system consists of the Sun, planets, dwarf planets, comets, asteroids, dust and gas. This collection of bodies orbits around the center of the solar system. There are many different components that make up this vast system, and it is important to know each one to better understand how the solar system works. In this post, I will discuss everything you need to know about the planets and working principles of the solar system.

The Planets

The planets are made up of rocks, gas, and ice. They can range from small rocky planets like Mercury to gaseous giants like Jupiter. Our solar system is made up of nine planets, from closest to farthest. They are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune. Pluto was classified as a planet until it was reclassified as one of the Kuiper Belt Objects in 2006.

Components of the Planets

Earth is located between the orbits of Mars and Venus. In terms of size, Earth is considered a small planet. Mercury, on the other hand, is a very small planet with a larger orbit than Earth. It is so small that it has no atmosphere.
The big ones are Jupiter and Saturn. These planets are about 318 times as large as Earth and 8-9 times its volume. A solar system component you may not have heard of is Pluto, which was discovered by Clyde Tombaugh in 1930. Pluto is too small to be called a planet but it does have an orbit around the sun and is classified as a dwarf planet or trans-Neptunian object.

Components of the solar system

The solar system components are planets and each have their respective satellites.  The majority of the solar system components are in orbits around the sun with some being larger than others. Mercury has an average radius of 3,032 km and is roughly 4.8 million km from the sun at closest approach. It takes approximately 88 days to orbit the sun. Venus’s average radius is 6,052 km with a perihelion distance of 108 million km from the sun; it takes 225 days to orbit the sun on average.



Asteroids, comets, Kuiper belt objects

Asteroids are rocky and metallic bodies that range in size from a few feet across to more than 200 miles wide.

Comets are made up of ice, dust, and rock, so they have some similarities with asteroids. One difference is that comets have comet tails on them, which means they are continually being eroded by solar wind particles while traveling through space.

Kuiper belt objects are also called trans-Neptunian objects because they orbit past Neptune. These could be icy planets, or small icy moons orbiting the gas giants. They are too far away for us to see any details about them without instruments like New Horizons, but we know for sure that there’s at least one object out there called Sedna.

The Moon

The Moon is a natural satellite in the solar system. It is rocky and appears solid, with a cratered surface. The Moon moves closer to Earth at perigee and away from Earth at apogee. The Moon was created when a planetoid, either Venus or Mars, collided with Earth around 4.5 billion years ago. The moon is one fourth the size of Earth’s radius and its gravity has a minimal effect on Earth’s tides.

Neptune’s largest moon Triton orbits too far from Neptune for Triton’s gravity to affect Neptune significantly. Titan’s atmosphere contains nitrogen and methane that allow for liquid lakes and rivers of hydrocarbons that form complex organic molecules like amino acids.


A solar system is a group of celestial bodies that are close to each other . Stars are not included in solar systems because they are outside of our solar system. There are nine planets and their moons within our solar system. A comet is a small icy object in space that orbits around the sun. It is also called a dirty snowball. Comets have tails as they approach the sun because heat melts some of the ice on its surface releasing gas and dust into space. An asteroid is an object that orbits around the sun between Mars and Jupiter. It’s too small to be considered a planet or moon. They come in many shapes, sizes, colors, and compositions like rock or metal. Dust particles are found everywhere in outer space.


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