/r/askscience
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If we would go to the moon today - using and bringing with us the technological capabilities we possess now - what would differ from our missions some 40 years ago?
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Air conditioners haven't changed much in 50 years. Why are they still so large, noisy, and expensive to operate? Are there any breakthroughs on the horizon?
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Earth makes an elliptical orbit and on december 22nd our planet lies closer to the sun than on june 21st. Does that mean summers are warmer in the southern hemisphere?
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According to Wikipedia, we have no observational evidence for wormholes. Where did the idea come from?
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In the latest Avengers movie, there is a "Nexus" hub which routes every packet of traffic on the internet. What is the closest thing we have to a core of the internet in real life?
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