Neptune(Laily)

=  NEPTUNE (LAILY HAPSARI WARDOYO)   =

**Orbital period**: 164.79132 years **Date of discovery**: September 23, 1846
 * Urbain Le Verrier
 * John Couch Adams
 * Johann Galle

**History**: Neptune is the 8th planet and it is the outermost gas giant in the solar system. It is fourth largest by diameter and third largest by mass, but it is the smallest of the gas giants. It is somewhat smaller than Uranus, but more substantial, this is due to a higher density and profusion of heavier elements within Neptune.

**Mythology**: Neptune is named after The Roman god of the sea. It symbolizes a representation of the god’s trident. Neptune is unknown to the ancients, it was named for the god, as its deep blue gas clouds gave 19th-century astronomers the impression of great oceans.

**Size**: 17 times bigger than earth **Composition**: **Atmospheric conditions**:
 * Diameter: 49,500 km
 * Volume: 6.25 x 1013 km3
 * Surface Area: 7.64 x 109
 * Mass: 1.02 x 1026 kg
 * There is a core in the very inside which is made out of rock and ice.It is 7,000 degrees C.
 * Then there is a Mantle which made out of water, ammonia and methane ice.
 * The atmosphere that is made out of hydrogen, helium and methane gas.
 * Then there is the upper atmosphere, which is the cloud tops. It is -218 degrees C.
 * Icy cold grounds
 * Its atmosphere contains mostly of hydrogen & helium and it also contains water, methane and ammonia. There’s a trace of hydrocarbons, some nitrogen as well but hasn’t been confirmed yet.


 * Resources: **
 * Gravity
 * Collection of gasses and dust that was collected for billions of years
 * Significant & noteworthy features: **
 * Neptune is the windiest planet that is able to reach 1,230mph, which is three times faster than anything on earth
 * It has 11 moons with 16-hour day
 * Even though Neptune is the farthest away from the sun, Neptune’s temperature is -218 degress C


 * What don’t we know? **
 * Since Neptune is 17 times bigger than Earth and it takes 165 years to orbit around the sun. It orbits really slow. This means that Neptune is only 1 year since its discovery.
 * Even though Neptune is the farthest away from the sun, Neptune’s temperature is -218 degrees C.
 * Neptune has only been visited by 1 spacecraft, Voyager 2 on August 25, 1989


 * Future plans or expeditions: **
 * In about 30 years from now, a wild nuclear powered space exploration mission to Neptune will occur and this could reveal the solar system’s interesting facts


 * Sources: **
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