/u/Nerrolken's posts in /r/askscience
Is there an altitude on Venus where both temperature and air pressure are habitable for humans, and you could stand in open air with just an oxygen mask?
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If time and space are parts of the same thing, is there equivalency in their measurement? In a 4-dimensional graph with axes X/Y/Z/T, can we say that "1 foot of distance along axis X equals 5.3 seconds of movement along axis T"?
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Is there a reason for rocky planets to be closer to a star and gas giants to be farther, or is that grouping in our solar system coincidental?
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Magma is molten rock under a planet's surface. Lava is molten rock that comes up through a volcano. Is there a technical/specific name for molten rock that originated on the surface, like a planet that hasn't cooled or the rock that melts from an asteroid impact?
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When we talk about stars being red or yellow or blue, would that difference actually be visible to human eyes? Or would they all just look "white" to humans, and instruments are needed to tell the difference?
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Do the perihelion and aphelion of the major planets line up, or are the orbital ovals oriented randomly relative to each other?
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