The Home For Interesting Planet Facts

Planet Facts
Planet Facts
Welcome to a site filled with fun planet facts on all the planets of our Solar System

There are eight planets that orbits the Sun: Mercury, Venus, Mars, Earth, Jupiter, Saturn, Uranus and Neptune. On this site, each planet has its own facts page, with interesting and little known facts about each planet. Pluto has its own facts page too, even though it has been declassified as a planet.

Select Which Planet Facts Page You want to See:

Planet MercuryMercury

The closest planet to the Sun

Planet VenusVenus

A beautiful looking planet with a deadly atmosphere

Planet EarthEarth

Our home planet

Planet MarsMars

The Martian planet

Planet JupiterJupiter

The Biggest planet in our Solar System

Planet SaturnSaturn

Known for its beautiful rings

Planet UranusUranus

An upside down world

Planet NeptuneNeptune

The Blue Icy Wonder


The former planet

If you are looking for Facts on Space and the Universe in general, then head over to the More Space Facts page

So What Defines A Planet?

The International Astronomical Union defines a planet as a celestial body that orbits around a star (like our sun) and is big enough that it forms into a shape of a sphere by its own gravity. But a planet cannot be big enough that it can cause thermonuclear fusion. It also has to have a clear orbit with no other bodies of comparable size influencing its gravitational force.

Did You Know There Are Two Categories of Planets?

A Planet falls into two categories. It is either a Terrestrial Planet or a Gas Giant. Planets that have a body composed mainly of rock (like the Earth) is called a terrestrial planet. This would include Mercury, Venus, Mars and Earth. Gas Giants, however, are planets that are made of gas. They do not have a solid surface crust. Jupiter and Saturn falls into this category. Uranus and Neptune are also Gas Giants, but they also fall into sub category called Ice Giants because they contain a huge proportion of rock and ice as well.

Thank You For Visiting

We hope you learn something during your stay and will share your discoveries with your friends. Remember to bookmark us so you can learn more Planet Facts in future updates.