is a unique planet made up of mostly three different gasses. Neptune is 74% Hydrogen, 25 % Helium, and 1% Methane.Neptune appears blue because of the gasses it is composed of. Neptune is broken down into four layers: the Upper atmosphere, Atmosphere, Mantle, and Core. Within those layers, different materials and elements make up Neptune. For example clouds are found in the upper atmosphere. Hydrogen, helium, and methane are found in the atmosphere. Water, ammonia, and methane ices found in the mantle. Also rock and ice are found in the core of Neptune. Knowing that there is ice on Neptune, saying this planet is cold is a safe assumption. Neptune is 2,795,084,800 miles or 4,498,252,900 kilometers away from the sun on average. Neptune is the farthest plant from the sun getting the least amount of heat and light from the sun. Thick ice forms in the deep mantle and inner core. Knowing this, that is why no astronaut has stepped foot on Neptune.
Data for Neptune's Moons
Moon- A moon is a structure that orbits around a planet out of it's atmosphere . Neptune has 13 known moons. 11 of Neptune's moons are not visible from earth. Scientists in the late 18 hundreds and early 19 hundreds spotted Triton and Nereid by telescope. Astrologists began to discover Neptune's moons when NASA started sending humans and surveillance equipment into outer space.
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Rings- Neptune has 9 rings. They were discovered in the late 1980s by Voyager 2. The smallest ring that stretches across Neptune is 41,900 Km long. Neptune's largest ring is 62,900 km. Neptune's rings are made up of dust particles that were left over when the planet was created. They then fell into the planet's orbit and created rings. The rings are difficult to see without taking quality satellite images.
Gravity- Neptune is made up of gasses so its impossible to walk on, but if you could walk on Neptune's surface, you would weight 1.14 times heavier on Neptune. If you weighed 100 pounds on earth, you would weigh 114 pounds on Neptune. This is because Neptune is is 1.14 times bigger than earth having 1.14 times the gravity on Neptune than on earth. The more surface area a planet has, the more gravitational force pushes down on the planet. This is similar to Buoyancy. The more surface area an object has, the more force can push upon it to make it float. The moon is smaller than Earth allowing it to have less gravitational force. That is why astronauts can float on the moon
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