Hydrogen, helium, methane
Neptune's minor atmospheric gases are ethane and hydrogen deuteride. Its major gases are hydrogen, helium, and methane. Neptune's blue appearance is caused by the mixture of these gases.
The Neptunes was created in 1990.
neptunes gravity is high
While Neptune is made of mostly hydrogen and helium, its atmosphere does include three other gases. Methane, hydrogen deuteride, and ethane make up just barely over 3 percent of the planet's atmosphere.
neptunes size is 12% grater then the earth
no
It was discovered in 1846.
It is black!!
gas
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It has no precipitation.