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

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When astronauts "slingshot" around a planet to pick up speed and conserve fuel, do they feel that acceleration? Would they feel it more around one if the gas giants due to gravitational effect?

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We learn in school that dinosaurs lived for millions of years but do we know how long an individual dinosaur lived?

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Why do we have nightmares?

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How do we know that the heat index makes it feel hotter than it is as opposed to actually just being that temperature?

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Provided they could happen, how might rainbows look on other planets?

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Why does warm/hot water work so much better at cleaning than cold water?

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Would our planet or its inhabitants behave or look differently if our sun was the same size and distance but a different color?

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Why does it seem like everything gets louder when you nod off in public?

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Do we know why the gas giant planets in our solar system are located where they are and not, say, where Mercury, Venus, Earth and Mars are situated?

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Are there benefits to having a black hole in a galaxy? Does it serve an actual purpose or is it there only to exist?

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
When astronauts "slingshot" around a planet to pick up speed and conserve fuel, do they feel that acceleration? Would they feel it more around one if the gas giants due to gravitational effect?	1
We learn in school that dinosaurs lived for millions of years but do we know how long an individual dinosaur lived?	1
Why do we have nightmares?	1
How do we know that the heat index makes it feel hotter than it is as opposed to actually just being that temperature?	1
Provided they could happen, how might rainbows look on other planets?	1
Why does warm/hot water work so much better at cleaning than cold water?	1
Would our planet or its inhabitants behave or look differently if our sun was the same size and distance but a different color?	1
Why does it seem like everything gets louder when you nod off in public?	1
Do we know why the gas giant planets in our solar system are located where they are and not, say, where Mercury, Venus, Earth and Mars are situated?	1
Are there benefits to having a black hole in a galaxy? Does it serve an actual purpose or is it there only to exist?	1