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

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I saw the Karman Line defined as the height where the speed required to maintain lift on an aircraft equals the orbital velocity. How does this definition account for different aircraft generating different amounts of lift?

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Why doesn't the water vapor in clouds either disperse or condense? Why does it stay together, but still not just immediately condense as water molecules attract each other?

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What does it mean for light to travel as a wave?

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Why do hexagons pop up in relation to the five Platonic solids?

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How can dreams create a whole narrative to explain unexpected sounds that happen in real life while you're sleeping?

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If something happened to the ISS and made it impossible to dock a spacecraft, how would we evacuate the astronauts?

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If we were magically able to view a supernova from close up (say, at a distance of 1 AU) without being touched by it, what would it look like? A balloon blowing up, or a bomb going off?

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Is there any debate that the dinosaurs died when the meteorite hit?

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What do fish do with the hydrogen after their gills extract oxygen from water?

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As long as a spacecraft didn't encounter anything else on its journey and didn't run out of fuel, why couldn't it ever reach the speed of light or faster (since there would be nothing in its way to slow it down or stop it)?

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Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
I saw the Karman Line defined as the height where the speed required to maintain lift on an aircraft equals the orbital velocity. How does this definition account for different aircraft generating different amounts of lift?	1
Why doesn't the water vapor in clouds either disperse or condense? Why does it stay together, but still not just immediately condense as water molecules attract each other?	1
What does it mean for light to travel as a wave?	1
Why do hexagons pop up in relation to the five Platonic solids?	1
How can dreams create a whole narrative to explain unexpected sounds that happen in real life while you're sleeping?	1
If something happened to the ISS and made it impossible to dock a spacecraft, how would we evacuate the astronauts?	1
If we were magically able to view a supernova from close up (say, at a distance of 1 AU) without being touched by it, what would it look like? A balloon blowing up, or a bomb going off?	0
Is there any debate that the dinosaurs died when the meteorite hit?	0
What do fish do with the hydrogen after their gills extract oxygen from water?	0
As long as a spacecraft didn't encounter anything else on its journey and didn't run out of fuel, why couldn't it ever reach the speed of light or faster (since there would be nothing in its way to slow it down or stop it)?	0