What is Neptune made of?

Answer 1

Neptune consists primarily of 80% hydrogen and 19% helium. In smaller amounts, it also consists of water, methane, ammonia, and other compounds that can form ice in our solar system's temperatures.

Neptune is classified as an ice giant planet, mainly made of the ice-forming molecules water, ammonia, and methane as a liquid mixture above what is thought to be a rocky core. Its atmosphere is mainly hydrogen and helium, along with methane gas that gives the planet a blue-green color

Answer 2

Neptune is primarily composed of hydrogen, helium, and methane in its atmosphere. Below the atmosphere lies a mantle of water, ammonia, and methane ice, surrounding a core of rock and metal. The extreme pressure and temperatures on Neptune cause these materials to form into different states, such as liquid and ice.

Answer 3

Neptune is a gas planet made of hydrogen, methane, and helium. Its clouds are made of methane crystals and the planet is extremely cold.

Answer 4

The atmosphere of Neptune is composed of ~80% Hydrogen (H2). Next greatest is Helium at ~19%.

Answer 5

Neptune is composed of about 80% hydrogen, 19% helium, and 1% methane

Answer 6

80% hydrogen

19% helium

1.5% methane

0.019% hydrogen deuteride

0.00015% ethane

Answer 7

It's hydrogen, helium and methane!.