Neptune is blue The main components of hydrogen, helium and methane atmosphere, outer atmosphere of Neptune. There are strong winds (2500 km / hour), the surface temperature is about -220 ℃ (-364 ° F), which was very cold because Neptune is far more sun. But the core of Neptune. Hot gas and rock A temperature of about 7,000 ℃ (12,632 ° F), which is hotter than the surface of the sun again.
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