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Extremely Hard Science Quiz Even Einstein would scratch his head!
What is the second most abundant element in the Universe?
The Cassini-Huygens probe was sent to visit which planet?
How many types of sea urchin are there?
Protons and neutrons have approximately the same what?
What is the pH value of seawater?
The gravity on the moon is what fraction of the gravity on Earth?
A group of jellyfish is called what?
A 'buckyball' is an allotrope of which element ?
Scampi is a form of what?
Iapetus is a moon of which planet?
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