/u/hazysummersky's posts in /r/askscience

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What causes an itch, and why does a scratch help it?

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Is there anywhere in the universe that is actually at absolute zero?

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If the Earth were comprised 100% of water and you were swimming on the far side surface, would you see any sunlight refracting through it? Would there be a point in space further out where sunlight would lens through the globule and converge to melt anything that crossed through that point in space?

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After moonwalks on the successful Apollo missions, how did the astronauts deal with the potential of extremely abrasive moon dust collected on their spacesuits from getting into and damaging the hardware in the Command Module? Or just the cabin ending up dusty?

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
What causes an itch, and why does a scratch help it?	1
Is there anywhere in the universe that is actually at absolute zero?	1
If the Earth were comprised 100% of water and you were swimming on the far side surface, would you see any sunlight refracting through it? Would there be a point in space further out where sunlight would lens through the globule and converge to melt anything that crossed through that point in space?	1
After moonwalks on the successful Apollo missions, how did the astronauts deal with the potential of extremely abrasive moon dust collected on their spacesuits from getting into and damaging the hardware in the Command Module? Or just the cabin ending up dusty?	1