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

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The speed of sound at sea level at 20ºC in dry air is 343.2 m / s. Did Felix Baumgartner actually break the sound barrier at his altitude/temperature?

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If Earth had planetary rings like Saturn, Neptune, or Jupiter, would life on earth be any different?

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How would Earth be different if it had planetary rings?

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If protons could travel a sub-light speeds how much mass would they need to maintain a linear level of energy?

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At some point in agriculture, humans became capable of generating enough nutrition for themselves and their community through plants alone. Why did we continue to keep and eat livestock after this point?

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
The speed of sound at sea level at 20ºC in dry air is 343.2 m / s. Did Felix Baumgartner actually break the sound barrier at his altitude/temperature?	3
If Earth had planetary rings like Saturn, Neptune, or Jupiter, would life on earth be any different?	1
How would Earth be different if it had planetary rings?	1
If protons could travel a sub-light speeds how much mass would they need to maintain a linear level of energy?	1
At some point in agriculture, humans became capable of generating enough nutrition for themselves and their community through plants alone. Why did we continue to keep and eat livestock after this point?	1