"Astronomers have determined that the Milky Way may contain as many as 400 billion exoplanets, with almost every star hosting at least one planet.
An exoplanet or extrasolar planet is a planet that does not orbit Earth's Sun and instead orbits a different star, stellar remnant, or brown dwarf.
Over 1800 exoplanets have been discovered (1810 planets in 1125 planetary systems including 466 multiple planetary systems as of 10 July 2014).
There are also free floating planets not orbiting any star but they tend to be considered separately, especially if they are free floating gas giants in which case they are often counted aslow-mass rown dwarfs..."
An exoplanet or extrasolar planet is a planet that does not orbit Earth's Sun and instead orbits a different star, stellar remnant, or brown dwarf.
Over 1800 exoplanets have been discovered (1810 planets in 1125 planetary systems including 466 multiple planetary systems as of 10 July 2014).
There are also free floating planets not orbiting any star but they tend to be considered separately, especially if they are free floating gas giants in which case they are often counted aslow-mass rown dwarfs..."
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