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1.
Which is the odd one out?
The other three planets aren’t made of gas.
2.
Which is the odd one out?
This planet has no moons.
3.
Which is the odd one out?
The only planet that wasn’t named after a god.
4.
Which is the odd one out?
Spacecraft have landed on Mars and Venus but not Mercury.
5.
Which is the odd one out?
This planet isn’t made of gas.
6.
Which is the odd one out?
This planet has no liquid water.
7.
Which is the odd one out?
This planet hasn’t made a full orbit around the Sun since it’s discovery.
8.
Which is the odd one out?
This planet has 6 letters in it’s name instead of 7