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

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If I were traveling at the speed of light and, for instance, threw a baseball ahead of me, what would happen?

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All other things being equal, what would humans notice is different about life on a very earthlike moon?

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Assuming it composition stays about the same, how small would the moon have to be to fit into the breathable part of the earth's atmosphere without massively affecting the tides?

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How much heavier than normal water is heavy water? If I had two drinking glasses, one full of water and the other full of heavy water, could I tell which is which? What would be the minimum volume necessary to noticeably differ in weight?

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Speaking on a geological timescale, have there been mountains on the scale of the Himalayas before? Are there likely to be again at some point in the relatively near (geologically speaking) future?

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How did huge quantities of hydrocarbons naturally form on Titan without any life?

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Are there any substances that never become a solid at any temperature we've been able to observe? Are there any that never even make it to liquid?

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Why does it (normally) take a sustained period of stimulation to cause orgasm/ejaculation?

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Why does light move at the maximum possible speed, rather than some slower speed?

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
If I were traveling at the speed of light and, for instance, threw a baseball ahead of me, what would happen?	1
All other things being equal, what would humans notice is different about life on a very earthlike moon?	1
Assuming it composition stays about the same, how small would the moon have to be to fit into the breathable part of the earth's atmosphere without massively affecting the tides?	1
How much heavier than normal water is heavy water? If I had two drinking glasses, one full of water and the other full of heavy water, could I tell which is which? What would be the minimum volume necessary to noticeably differ in weight?	1
Speaking on a geological timescale, have there been mountains on the scale of the Himalayas before? Are there likely to be again at some point in the relatively near (geologically speaking) future?	1
How did huge quantities of hydrocarbons naturally form on Titan without any life?	1
Are there any substances that never become a solid at any temperature we've been able to observe? Are there any that never even make it to liquid?	1
Why does it (normally) take a sustained period of stimulation to cause orgasm/ejaculation?	1
Why does light move at the maximum possible speed, rather than some slower speed?	1