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]
List of directly imaged exoplanets - Wikipedia
WEBThis is a list of extrasolar planets that have been directly observed, sorted by observed separations. This method works best for young planets that emit infrared light and are far from the glare of the star. Currently, this list includes both directly imaged planets and imaged planetary-mass companions (objects that orbit a star but formed ...
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 ...
Exoplanets - NASA Science
WEBAn exoplanet is any planet beyond our solar system. Most orbit other stars, but free-floating exoplanets, called rogue planets, are untethered to any star. We’ve confirmed more than 5,200 out of the billions of exoplanets that we believe exist.
Extrasolar planet | Definition, Detection, Properties, & Facts
WEBMay 24, 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. Detection of extrasolar planets. Explore exoplanets and the techniques used to detect them.
What Are Extrasolar Planets? - Universe Today
WEBFeb 8, 2021 · Definition: An extrasolar planet (aka. exoplanet) is a planet that orbits a star (i.e. is part of a solar system) other than our own. Our Solar System is only one among billions and many of them...
ESA - What are exoplanets? - European Space Agency
WEBAn exoplanet is a planet outside our own Solar System, sometimes referred to as an extrasolar planet. More than 5000 exoplanets have been confirmed. Some are massive, like Jupiter, but orbit much closer to their host star than Mercury does to our Sun. Others are rocky or icy, and many simply do not have analogues in our Solar System.
Exoplanets | HubbleSite
WEBJan 24, 2024 · This quest took a huge leap forward in 2000 when Hubble studied the exoplanet HD 209458 b, the first extrasolar planet known to make “transits” across the face of its star. Hubble became the first telescope to directly detect an exoplanet’s atmosphere and survey its makeup.
Exoplanets: Worlds Beyond Our Solar System - Space.com
WEBNov 14, 2023 · Exoplanets are planets that orbit stars other than the sun and thus exist outside the solar system. The word "exoplanet" derives from the term "extrasolar planet," which hints at its existence...