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Astronomers have calculated winds blasting across the surface of Neptune at 2,100 km/hour. Deep down inside Neptune, the planet might have an actual solid 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.
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.
Orbiting the sun at a distance of 2.8 billion miles (4.5 billion kilometers), Neptune is the fourth-largest planet by diameter and third-largest by mass, having a diameter of 30,598 miles (49,244 kilometers).
Neptune is the fourth largest planet in the solar system, with a radius of 15,599.4 miles (24,622 kilometers) — the distance between its core and the surface. However, Neptune is a spheroid ...
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). It is named after the Roman god of the sea and has the astronomical symbol , representing Neptune's trident. [e]
It has planet-like characteristics similar to Pluto such as a complex icy surface and thin nitrogen atmosphere and may have started off as a free-roaming dwarf planet. Geysers of nitrogen erupt from Triton’s surface that may be coming from a subsurface water ocean.
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.
Neptune is the windiest planet in our solar system, whipping up momentous gusts that can reach more than 1,200 miles an hour. That soothing sapphire expanse does reveal some of the whirling chaos...
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.