Neptune has the longest orbital period of any planet within the solar system. The eighth and most distant planet from the sun, it takes Neptune approximately 165 years to complete a single orbit.Know More
It has an elliptical orbit with an average distance from the Sun of 2.8 billion miles, approximately 30 times more distant than the Earth. This distance makes Neptune invisible to the naked eye from the surface of Earth.
As of 2014, Neptune has completed only one orbit since its existence was first mathematically inferred by French astronomer Alexis Bouvard in 1846. German astronomer Johann Galle subsequently used Bouvard's calculations to spot Neptune with a telescope on September 23, 1846.Learn more about Planets
The surface temperatures of the solar system's planets are dependent on how close each planet is to the sun. Planets that have atmospheres are better able to retain heat from the sun, affecting the planet's surface temperature.Full Answer >
It takes the planet Neptune about 165 Earth years or 60,190 Earth days to fully orbit the sun, which is equal in time to 1 year on Neptune. Neptune is the eighth planet in the solar system and is around 2.8 billion miles away from the sun.Full Answer >
The revolution of Uranus, or the time it takes for the planet to revolve around the sun, is 30,687.15 Earth days. This revolution is also the equivalent of approximately 84 years on Earth.Full Answer >
Ptolemy’s theory of the solar system placed the Earth at the center with each planet on an orbit around it and the stars on a celestial sphere. Ptolemy believed that astronomical elements existed in circular, rotating motions.Full Answer >