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Of all the planets in the solar system Jupiter is, without a doubt, the largest, most massive and most dominant of all. If Jupiter were a container, over 1400 planets the size of Earth could fit inside. The picture above is the first colour picture taken of Jupiter. We can also see Europa, one of Jupiter’s moons, which is approximately the same size as Earth; imagine how small we are!


Jupiter is a large gas planet where clouds change colours daily. Jupiter’s complex atmosphere bristles with lightening and swirls with huge storm systems.

Jupiter is sometimes called a mini solar system because of all its moons (16) and its many rings.

Système Solaire

Jupiter’s chemical composition is also very similar to the Sun’s. We could say that Jupiter is a fake star because observation of the planet has confirmed that it radiates more energy into space than it receives from the Sun. Who knows if Jupiter had been only 10 times larger maybe we would have had two suns instead of one...

How heavy would you be on Jupiter?


Si tu pèses 34 kilogrammes (kg) (75 livres (lb)) sur Terre, tu pèserais 79  kg (175 lb) sur Jupiter. Pour calculer ton poids, tu n'as qu'à le multiplier par 2,34.

If you weigh 34 kilograms (kg) (75 pounds (lb.)) you would weigh 79 kg (175 lb.) on Jupiter. To calculate your weight, all you have to do is multiply your weight (kg or lb.) by 2.34.

How old would you be on Jupiter?

Gâteau d'anniversaire

Can you guess how old you would be on Jupiter if you are 10 years old this year? You would be 10,366 days old or barely one year old!