NEPTUNE

Introduction

·Neptune is the fourth planet in size and the eighth in terms of distance to the Sun. It is currently the last planet in the solar system.

The average distance from Neptune to the Sun is 4.5 billion kilometers.   Its equatorial diameter is approximately 49,400 kilometers, or about 3.8 times that of Earth.  Its volume is approximately 72 times and it´s mass 17 times that of Earth or 1.7 times that of water.   Neptune completes its orbit around the Sun every 165 years.  A day in Neptune has 16 hours and 6.7 minutes.

Temperature

·The temperature of the surface of Neptune is about -218 ° C, similar to that of Uranus, which is more than 1,500 kilometers closer to the sun, therefore, scientists assume that Neptune must have some internal source of heat.

 Atmosphere

The Atmosophere

The atmosphere consists mainly of hydrogen and helium, but the presence of more than 3% of methane gives the planet its surprising blue color.

Neptune's two-thirds interior are composed of a mixture of molten rock, water, ammonia and liquid methane.

The outer third is a mixture of hot gases composed of hydrogen, helium, water and methane.

📢The end