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Extremely Hard Science Quiz Even Einstein would scratch his head!
How many moons orbit Mars?
Dogs' unique relationship with humans mean they are referred to as man's best what?
Which planet shares its name with a popular chocolate bar?
Iapetus is a moon of which planet?
When was the element hassium discovered?
The gravity on the moon is what fraction of the gravity on Earth?
Yogurt is produced by bacterial fermentation of what?
Which of these is an example of a transverse wave?
Encleadus is a moon of which planet?
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