Matches in DBpedia 2014 for { <http://dbpedia.org/resource/Exoplanet> ?p ?o. }
- Exoplanet abstract "An exoplanet or extrasolar planet is a planet outside the Solar System. Around 1800 such planets have been discovered(1786 planets in 1106 planetary systems including 460 multiple planetary systems as of 1 May 2014).The Kepler mission space telescope has also detected a few thousand candidate planets, of which about 11% may be false positives.There are at least 100 billion planets in the Milky Way, with at least one planet on average per star. The Milky Way also contains possibly trillions of rogue planets, which are not bound to any star. Around 1 in 5 Sun-like stars have an "Earth-sized" planet in the habitable zone, so the nearest would be expected to be within 12 light-years distance from Earth. There could be as many as 40 billion Earth-sized planets orbiting in the habitable zones of Sun-like stars and red dwarfs within the Milky Way. 11 billion of these estimated planets may be orbiting Sun-like stars.On February 26, 2014, NASA announced the discovery of 715 newly verified exoplanets around 305 stars by the Kepler Space Telescope. These exoplanets were checked using a statistical technique called "verification by multiplicity". Prior to these results, most confirmed planets were gas giants comparable in size to Jupiter or larger as they are more easily detected, however the Kepler planets are mostly between the size of Neptune and the size of Earth.The nearest known exoplanet, if confirmed, would be Alpha Centauri Bb, but there is some doubt about its existence. Almost all of the planets detected so far are within the Milky Way; however, there have been a small number of possible detections of extragalactic planets.As of March 2014, the least massive planet known is PSR B1257+12 A, which is about twice the mass of the Moon. The most massive planet listed on the NASA Exoplanet Archive is DENIS-P J082303.1-491201 b about 29 times the mass of Jupiter, although, according to most definitions of a planet, is too massive to be a planet, and may be a brown dwarf instead. There are planets that are so near to their star that they take only a few hours to orbit and there are others so far away that they take thousands of years to orbit. Some are so far out that it is difficult to tell if they are gravitationally bound to the star. (See also: List of exoplanet extremes.)For centuries philosophers and scientists supposed that extrasolar planets existed, but there was no way of detecting them or of knowing their frequency or how similar they might be to the planets of the Solar System. Various detection claims made in the nineteenth century were rejected by astronomers. The first confirmed detection came in 1992, with the discovery of several terrestrial-mass planets orbiting the pulsar PSR B1257+12. The first confirmation of an exoplanet orbiting a main-sequence star was made in 1995, when a giant planet was found in a four-day orbit around the nearby star 51 Pegasi. Some exoplanets have been imaged directly by telescopes, but the vast majority have been detected through indirect methods such as the transit method and the radial-velocity method.The discovery of extrasolar planets has intensified interest in the search for extraterrestrial life, particularly for those that orbit in the host star's habitable zone where it is possible for liquid water (and therefore life) to exist on the surface. The search for extrasolar planets prompts the study of planetary habitability, which considers a wide range of factors in determining the suitability of an extrasolar planet for hosting life.".
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- Exoplanet wikiPageExternalLink www.astrozeng.com.
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- Exoplanet wikiPageID "9763".
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- Exoplanet align "right".
- Exoplanet caption "--03-16".
- Exoplanet caption "2".
- Exoplanet caption "The three known planets of the star HR8799, as imaged by the Hale Telescope. The light from the central star was blanked out by a vector vortex coronagraph.".
- Exoplanet direction "vertical".
- Exoplanet image "444226".
- Exoplanet image "Brown dwarf 2M J044144 and planet.jpg".
- Exoplanet image "The Star AB Pictoris and its Companion - Phot-14d-05-normal.jpg".
- Exoplanet width "220".
- Exoplanet subject Category:Exoplanetology.
- Exoplanet subject Category:Exoplanets.
- Exoplanet subject Category:Search_for_extraterrestrial_intelligence.
- Exoplanet subject Category:Types_of_planet.
- Exoplanet comment "An exoplanet or extrasolar planet is a planet outside the Solar System. Around 1800 such planets have been discovered(1786 planets in 1106 planetary systems including 460 multiple planetary systems as of 1 May 2014).The Kepler mission space telescope has also detected a few thousand candidate planets, of which about 11% may be false positives.There are at least 100 billion planets in the Milky Way, with at least one planet on average per star.".
- Exoplanet label "Exoplaneet".
- Exoplanet label "Exoplanet".