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Which object in our Solar System is Bigger?
Callisto
Earth
Ganymede
Io
Jupiter
Mars
Mercury
Neptune
Pluto
Saturn
The Moon
The Sun
Titan
Uranus
Venus
Or
Callisto
Earth
Ganymede
Io
Jupiter
Mars
Mercury
Neptune
Pluto
Saturn
The Moon
The Sun
Titan
Uranus
Venus
Find out which of the Planets, Moons or Sun is the biggest. Choose 2 planets from the drop downs below and click 'Lets Find Out!'