/u/the_y_of_the_tiger's posts in /r/askscience
When I open the window shade in the morning, how many photons stream in per second? Are we talking million, billions, trillions, or more?
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How feasible would it be to build a balloon or blimp-type vehicle that could ascend high enough that the earth would turn below it and the vehicle could then come straight down and be on the other side of a big country or continent?
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What are the chances that alien civilizations, if they exist, could detect the nuclear explosions of our 20th century such as the RDS-220 hydrogen bomb thermo nuclear explosion on 30 October 1961 in the Russian Arctic Sea?
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What would life be like if the speed of light was the same as the speed of sound, in either direction?
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What would happen if we someday develop the technology to slowly "correct" the tilt of the Earth's axis from 23.5 degrees to be 0 degrees?
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What would happen to a plant if it was put in a vacuum chamber with no air, but still received plenty of sunlight and water?
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Can any experts weigh in on this Indigogo campaign proposing to build a Self-levitating reactionless thruster?
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What are the barriers to developing "flinging" based travel technology? For example, what would it take to "fling" a capsule full of people from DC to NY?
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