Exoplanet - Wikipedia
WEBAn exoplanet or extrasolar planet is a planet outside the Solar System. The first possible evidence of an exoplanet was noted in 1917 but was not then recognized as such. The first confirmation of the detection occurred in 1992. A different planet, first detected in 1988, was confirmed in 2003.
Extrasolar planet - Simple English Wikipedia, the free encyclopedia
WEBAn extrasolar planet (or exoplanet) is a natural planet in a planetary system outside our own solar system. A related concept is an exomoon, a natural satellite orbiting an exoplanet. In 2013, estimates of the number of terrestrial planets in the Milky Way ranged from at least 17 billion [1] to at least 144 billion. [2]
Discoveries of exoplanets - Wikipedia
WEBAn exoplanet (extrasolar planet) is a planet located outside the Solar System. The first evidence of an exoplanet was noted as early as 1917, but was not recognized as such until 2016; no planet discovery has yet come from that evidence.
Extrasolar Planets Encyclopaedia - Wikipedia
WEBThe Extrasolar Planets Encyclopaedia (also known as Encyclopaedia of exoplanetary systems and Catalogue of Exoplanets) is an astronomy website, founded in Paris, France at the Meudon Observatory by Jean Schneider in February 1995, which maintains a database of all the currently known and candidate extrasolar planets, with individual pages for ...
Super-Earth - Wikipedia
WEBIt was at the time the smallest extrasolar planet discovered around a normal star and the closest in mass to Earth. Being at an orbital distance of just 0.03 AU and orbiting its star in just 3.15 days, it is not in the habitable zone, and may have 100 times more tidal heating than Jupiter's volcanic satellite Io.
Extrasolar planet | Definition, Detection, Properties, & Facts
WEB5 May 2024 · Extrasolar planet, any planetary body that is outside the solar system and that usually orbits a star other than the Sun. Extrasolar planets were first discovered in 1992. More than 5,000 are known, and almost 9,000 await further confirmation. Learn more about extrasolar planets in this article.
List of exoplanet extremes - Wikipedia
WEBTitle Planet Star Data Notes Least massive PSR B1257+12 b: PSR B1257+12: 0.020 ± 0.002 M 🜨: The extrasolar planetesimal WD 1145+017 b is less massive, at 0.00067 M E.: Most massive The candidate for the most massive planet is contentious, as it is difficult to distinguish between a highly massive planet and a brown dwarf (the border between …
LHS 475 b - Wikipedia
WEBLHS 475 b is a terrestrial planet orbiting the star LHS 475 which is about 40.7 light years away, in the constellation of Octans. It was the first extrasolar planet to be confirmed by the James Webb Space Telescope. It completes an orbit every 2 days and is 99% the diameter of Earth.
In Depth - NASA Science
WEBAn exoplanet, or extrasolar planet, is a planet outside of our solar system that usually orbits another star in our galaxy. Exoplanets – planets outside our solar system – are everywhere. But why do we study them? What makes them so interesting?
Extrasolar Planets – Center for Planetary Sciences
WEBImage from NASA. What is an Extrasolar Planet? An extrasolar planet, or exoplanet, is a planet outside the Solar System. A total of 909 such planets (in 701 planetary systems, including 140 multiple planetary systems) have been identified as of 11 July 2013.
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