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

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When describing an amount of space, we call it an "area" or "volume." When describing an amount of time, we call it a "duration." What would we call an amount of spacetime, and what would that imply?

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When did scientists begin figuring out that some of the lights in the night sky were actually other worlds? Was it due to advancements in telescopes or was there something else that gave it away?

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
When describing an amount of space, we call it an "area" or "volume." When describing an amount of time, we call it a "duration." What would we call an amount of spacetime, and what would that imply?	3708
When did scientists begin figuring out that some of the lights in the night sky were actually other worlds? Was it due to advancements in telescopes or was there something else that gave it away?	1