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Most (80% or more) of the planet's mass is made up of a hot dense fluid of "icy" materials – water, methane, and ammonia – above a small, rocky core. Of the giant planets, Neptune is the densest. Scientists think there might be an ocean of super hot water under Neptune's cold clouds.
Since it is the color of water, Neptune was named for the Roman god of the sea. Its blue-green color, however, is due to methane gas. The thick outer atmospheric layer of hydrogen, helium, and methane is extremely cold: −350°F (−212°C).
Most (80% or more) of the planet's mass is made up of a hot dense fluid of "icy" materials – water, methane, and ammonia – above a small, rocky core. Of the giant planets, Neptune is the densest. Scientists think there might be an ocean of super hot water under Neptune's cold clouds.
2 ημέρες πριν · 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.
17 Απρ 2023 · Neptune is the eighth and farthest planet from the sun but it is not the coldest. Our solar system 's blue gas giant is far larger than Earth, at more than 17 times Earth's mass and nearly 58...
23 Ιουν 2023 · Yet Neptune's the eighth planet in the solar system, about 30 times farther away from the sun than Earth. The distance between Neptune and its parent star is a staggering 2.8 billion miles (4.5 billion kilometers), making it the farthest planet from the sun.
Most of its mass is a hot, dense fluid of "icy" materials – water, methane and ammonia – above a small rocky core. Neptune's atmosphere is made up mostly of molecular hydrogen, atomic helium and methane. Neptune has 14 known moons which are named after sea gods and nymphs in Greek mythology.