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Inferior planets: Planets whose orbits lie within the orbit of Earth. [nb 1] Inner planet: A planet in the Solar System that have orbits smaller than the asteroid belt. [nb 2] Outer planet: A planet in the Solar System beyond the asteroid belt, and hence refers to the gas giants. Pulsar planet: A planet that orbits a pulsar or a rapidly ...
720,000 km/h (450,000 mi/h) [10] Orbital period. ~230 million years [10] The Solar System[d] is the gravitationally bound system of the Sun and the objects that orbit it. [11] It was formed about 4.6 billion years ago when a dense region of a molecular cloud collapsed, forming the Sun and a protoplanetary disc.
Main article: Solar System. According to the IAU definition, there are eight planets in the Solar System, which are (in increasing distance from the Sun):[2]Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. Jupiter is the largest, at 318 Earth masses, whereas Mercury is the smallest, at 0.055 Earth masses.
There are eight planets within the Solar System; planets outside of the solar system are also known as exoplanets. As of 6 September 2024, there are 5,756 confirmed exoplanets in 4,297 planetary systems, with 963 systems having more than one planet. [1] Most of these were discovered by the Kepler space telescope.
The 1007 multiplanetary systems are listed below according to the star's distance from Earth. Proxima Centauri, the closest star to the Solar System, has three planets (b, c and d). The nearest system with four or more confirmed planets is Gliese 876, with four known. [citation needed] The farthest confirmed multiplanetary system is OGLE-2012 ...
Outer planets (4 C, 6 P) Planetary rings (1 C, 23 P) Planetary satellite systems (8 C, 7 P)
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