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What is a planetary system

What is a planetary system

By daniele

A planetary system is a collection of non-stellar objects in orbit around a star or star system that are gravitationally bonded. Planetary systems, in general, refer to systems that contain one or more planets. Still, they can also include bodies like dwarf planets, asteroids, space, natural satellites, meteoroids, comets, planetesimals, and observable characteristics like circumstellar disks. The Solar System revolves around the Sun. The moon, space, and the planets that make up its planetary system include Earth. Other planetary systems are frequently referred to as extrasolar systems or exoplanetary systems, identical terminology. They are sometimes referred to as systems preceded by the star or star system that it orbits or simply as the star system’s name.

History of planetary system 

Human knowledge of planetary systems was restricted to heliocentrism and our planetary system before the 16th century and Copernican heliocentrism (the Solar System). Despite centuries of speculation and the discovery and exploration of the Solar System, It stayed this way until the revolutionary discovery of the unique PSR B1257+12 system and its extrasolar planets in 1992, which set several records, including the first multi-star planetary system identified as well as the first pulsar. 

Our planetary system 


The Milky Way galaxy’s outer spiral arm is where our solar system is located. The planets of our solar system are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune, as well as hundreds of moons, make up the Solar System. and millions of asteroids, comets, and meteoroids, all gravitationally bound to the Sun, make up our solar system. Thousands more planetary systems orbiting other stars in the Milky Way have been identified beyond our solar system.


The twenty-first century has become a golden age of planetary system discovery, with discoveries coming in at a breakneck pace. As of July 6, 2013, 908 such planets (in 700 planetary systems, including 140 multiple planetary systems) had been discovered. Hundreds of more systems have still to be confirmed. With its eight known planets, the Solar System remains the most remarkable planetary system. HD 10180, on the other hand, includes seven confirmed planets and two unconfirmed planets, making it the most extensive known exoplanetary system with a total of nine planets. A wide variety of planetary systems have been discovered, each with its orbital arrangement around various types of stars