The Nine Planets is an encyclopedic overview with facts and information about mythology and current scientific knowledge of the planets, moons, and other objects in our solar system and beyond. The 9 Planets in Our Solar System

2020年3月17日 · The planets of our Solar System are listed based on their distance from the Sun. There are, of course, the dwarf planets Ceres, Pluto, Haumea, Makemake, and Eris; however, they are in a different class. Among the dwarf planets, Pluto was listed as a planet the longest. This all changed in 2006 when the Astronomical Union – IAU – finally ...

2020年9月29日 · The eight planets in our Solar System, in order from the Sun, are the four terrestrial planets Mercury, Venus, Earth, and Mars, followed by the two gas giants Jupiter and Saturn, and the ice giants Uranus and Neptune. These are the eight planets of our Solar System; however, there is a ninth, or at least, there used to be a ninth planet, namely ...

The solar system consists of the Sun; the eight official planets, at least three “dwarf planets”, more than 130 satellites of the planets, a large number of small bodies (the comets and asteroids), and the interplanetary medium.

2019年12月6日 · The Planets of the Solar System Detailed information and facts about the eight planets and five dwarf planets in our solar system.

The Nine Planets is a collection of information about our Solar System intended for a general audience with little technical background. No special expertise or knowledge is needed; all technical and astronomical terms and proper names are defined in the glossary.

The terrestrial planets are the smallest in the Solar System. They are part of the inner solar system, being the closest to the Sun. The smallest terrestrial planet is Mercury. Mercury has a radius of 2.439 km / 1.516 mi and a diameter of 4.879 km / 3.032 mi. It is three times smaller than both Earth and Venus.

However, we shouldn’t forget about an often overlooked, yet significant part of our solar system. Those are the comets and asteroids, remnants from the formation of our system almost 4.6 billion years ago. Being part of a solar system tour, you wouldn’t just be observing the cosmos. Instead, you’d immerse yourself in a cosmic ocean, each ...

Dwarf planets are relatively small; for example, the largest dwarf planet in our Solar System, Pluto, is two times smaller than the smallest planet in our Solar System, Mercury. Pluto was considered a planet for a long time; however, after many other small planets were discovered, Pluto was classified as a dwarf planet.

2019年10月8日 · The distance among each of the eight planets in our Solar System will alter depending on where each planet is in its orbit revolution around the Sun. Depending on the time of year the distance can also differ significantly. The main reason for the planets to vary their distance is due to elliptical orbits.