Venus is the hottest planet in our solar system with a surface temperature of over 450 degrees celcius.
Saturn isn't the only ringed planet, other gas giants like Jupiter, Uranus and Neptune also have rings, they are just less obvious.
In 2006, astronomers changed the definition of a planet. This means that Pluto is now referred to as a dwarf planet.
Because of lower gravity, a person who weighs 200 pounds on earth would only weigh 76 pounds on the surface of Mars.
The only planet that rotates on its side like a barrel is Uranus. The only one that spins backwards relative to the rest is Venus.
Jupiter's 4 biggest moons are named Europa, Ganymede, Callisto and Io.