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

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Space travel, and the expansion of the universe's impact on distances between objects and travel time

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How do I compute the true time for space travel to Sagittarius, given the expansion of the universe?

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If I hold a 3 foot plastic tube by one end and spin it like a fan, will it force air to travel through the tube?

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
Space travel, and the expansion of the universe's impact on distances between objects and travel time	1
How do I compute the true time for space travel to Sagittarius, given the expansion of the universe?	1
If I hold a 3 foot plastic tube by one end and spin it like a fan, will it force air to travel through the tube?	1