Which is the lightest planet in the Solar System?

Saturn is the sixth planet from the Sun and the second-largest in the Solar System. Similar to Jupiter it has over 60 moons and is made up of different gases. It is a gas giant predominantly composed of hydrogen and helium. It lacks a definite surface, though it may have a solid core, It is also the lightest planet in the Solar System. Saturn is so light that it would float in water, if there was an ocean big enough.

Its most interesting feature is the series of rings that surround the planet. The rings aren't solid, but are made up of lots of little pieces of rock and ice particles that orbit Saturn at the same speed.

A day on Saturn is very short at only 11 Earth hours, but because it is so far from the Sun, 1 year is equal to almost 30 years on Earth! It is also very cold planet because of its distance from the Sun, 25 times colder than the average temperature on Earth at -175°C.