Neptune is blue Since the main constituents of the outer atmosphere are hydrogen, helium and methane, Neptune's atmosphere There are strong winds (2500 km/h). The surface temperature is around -220℃ (-364 °F), which is very cold because Neptune is so far away from the Sun. But the inner core of Neptune It consists of rocks and hot gases. The temperature is about 7,000℃ (12,632 °F), which is hotter than the surface of the Sun.
