Q:
Can People Live on Neptune?
A:
Quick Answer
Neptune's atmosphere is primarily made up of helium, methane and hydrogen, making it unsuitable for sustaining human life. Because Neptune is a gas giant, it has no surface, which means there is no solid ground to land on. Neptune is also dark, extremely cold and is subjected to supersonic winds.
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As of 2014, there has only been a single mission to Neptune, which was flown by the unmanned Voyager 2 spacecraft. Although there has been no manned missions to Neptune, astronomers speculate that a human may be able to at least survive a fly-by of Neptune in a secure spacecraft.
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