Uranus’ average surface temperature is -371.2 degrees Fahrenheit, making it the coldest planet in the solar system. One reason for this planet being so cold is that it has a low internal core temperature.
Uranus is an ice giant that does not consist of a solid surface. Its atmosphere has a composition that is mostly clouds made up of gases, such as hydrogen, helium and methane. Scientists believe that underneath this cloud layer there may be a liquid water layer and ice.
Uranus’ name comes from the Greek god Ouranos. William Herschel discovered this planet in 1781. Uranus has 13 rings and many moons, including Oberon and Miranda. Its period of revolution around the sun is 84 Earth years.Learn More
The nine planets in this solar system somewhat align once every 500 years and are grouped within 30 degrees every one to three alignments. When astrologers describe the planets as being aligned, they do not necessarily mean that all of the planets line up on a perfectly straight line. The last alignment within 30 degrees occurred in 561 B.C., and the next alignment within 30 degrees takes place in 2854.Full Answer >
Planetesimals are thought to form when dust particles, debris and rock that are in close proximity in space in a young planetary system are attracted to each other through gravitational forces and compress to form a solid object. Planetesimals represent the first step in planet formation.Full Answer >
The planet Jupiter was named after the chief Roman god of the same name, also known as Jove. It was named so because Jupiter is the largest planet in the solar system, while Jove is the king of the Roman gods.Full Answer >
Depending on their orbital progress, Venus or Mars may be the closest planet to Earth at any given time. The distance between Venus and Earth varies between 24 and 162 million miles, and the distance between Earth and Mars varies between 34 and 250 million miles.Full Answer >