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As a gas giant (or ice giant), Neptune has no solid surface. In fact, the blue-green disc we have all seen in photographs over the years is actually a bit of an illusion.
Neptune does not have a solid surface. Its atmosphere (made up mostly of hydrogen, helium, and methane) extends to great depths, gradually merging into water and other melted ices over a heavier, solid core with about the same mass as Earth.
Neptune does not have a solid surface. Its atmosphere (made up mostly of hydrogen, helium, and methane) extends to great depths, gradually merging into water and other melted ices over a heavier, solid core with about the same mass as Earth.
Being composed primarily of gases and liquids, [21] it has no well-defined solid surface, and orbits the Sun once every 164.8 years at an orbital distance of 30.1 astronomical units (4.5 billion kilometres; 2.8 billion miles).
Structure and Surface. Neptune is encircled by six rings. Neptune, like Uranus, is an ice giant. It’s similar to a gas giant. It is made of a thick soup of water, ammonia, and methane flowing over a solid core about the size of Earth. Neptune has a thick, windy atmosphere. Time on Neptune. One day on Neptune goes by in 16 hours.
The Neptune surface temperature in the uppermost cloud layer is approximately -218 degrees Celsius (-361 degrees Fahrenheit or 55 degrees Kelvin). This makes Neptune the coldest planet in the solar system.
As a gas giant (or ice giant), Neptune has no solid surface. In fact, the blue-green disc we have all seen in photographs over the years is actually a bit of an illusion.
Neptune being made out of layers of helium 29% and 80% hydrogen with traces of methane. It has a core about 1.5 times the size of Earth with twice its pressure: 7 Mbar or 700 GPa, making up about 45% of the planet’s mass, but it does not have a surface.
Like the other giant planets, Neptune consists primarily of hydrogen, helium, water, and other volatile compounds, along with rocky material, and it has no solid surface. It receives less than half as much sunlight as Uranus, but heat escaping from its interior makes Neptune slightly warmer than Uranus.
Like the Gas Giants, Neptune does not have a solid surface. The Ice Giants atmosphere is made up mostly of Hydrogen and Helium. Neptune also has a small but influential amount of atmospheric Methane too.