In our solar system we can find the five celestial bodies we have studied:


In the center of the Solar System is the Sun. The Sun is the only star in the Solar System and all the planets orbit around it.


As you already know, planets orbit the Sun. There are 8 planets in our Solar system: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune.

The planets are divided in 2 types, inner planets and outer planets:

  • Inner planets: the inner planets are close to the Sun. Mercury, Venus Earth and Mars are considered inner planets. They are made of rocks.

  • Outer planets: the outer planets are far from the Sun. Jupiter, Saturn, Uranus and Neptune are considered outer planets. They are made of gas.

Solar System - Sun and Planets - English.jpg


Dwarf planets are similar to planets but smaller, so they also orbit around the Sun. In our solar system, the International Astronomical Union has recognized five dwarf planets: Pluto, Ceres, Haumea, Makemake and Eris.


Moons orbit planets. In our Solar System, some planets have lots of moons, while others have a few or none. The Earth has got one moon, the Moon. Let's have a look at the moons in our Solar System:

Planets and Moons.jpg


Comets are celestial bodies made or gas, ice and dust, that orbit around the Sun. That orbit is elliptical, and because of that elliptical orbit, there is a point where a comet comes very close to the Sun, and the ice begins to melt. That is why, sometimes, comets have got a "tail" (it is the water vapor evaporated).

Do you want to know your weight on the different planets of our Solar System? Yes? Then, try this widget.

Would you like to see amazing videos from the International Space Station? Click on the picture to get into the ISS...

ISS - Webcam.jpg

Time for the videos.

The first video is a song that will help you to remember the planets in our Solar System.

The second video is an explanation about the Solar System.

Do you like playing games? So go to the games section.