Matches in DBpedia 2016-04 for { <http://dbpedia.org/resource/Betelgeuse> ?p ?o }
- Betelgeuse abstract "Betelgeuse (/ˈbiːtəldʒuːz/, /ˈbɛtəldʒuːz/, /ˈbiːtəldʒɜːrz/ or /ˈbiːtəldʒuːs/), also known by its Bayer designation Alpha Orionis (shortened to α Orionis or α Ori), is the ninth-brightest star in the night sky and second-brightest in the constellation of Orion. Distinctly reddish, it is a semiregular variable star whose apparent magnitude varies between 0.2 and 1.2, the widest range of any first-magnitude star. Betelgeuse is one of three stars that make up the Winter Triangle, and it marks the center of the Winter Hexagon. The star's name is derived from the Arabic إبط الجوزاء Ibt al-Jauzā', meaning \"the hand of Orion\". The Arabic letter for Y (which has two dots) was misread as B (with one dot) by medieval translators, creating the initial B in Betelgeuse.The star is classified as a red supergiant of spectral type M2Iab and is one of the largest and most luminous observable stars. If Betelgeuse were at the center of the Solar System, its surface would extend past the asteroid belt, possibly to the orbit of Jupiter and beyond, wholly engulfing Mercury, Venus, Earth and Mars. Estimates of its mass are poorly constrained, but range from 5 to 30 times that of the Sun. Its distance from Earth was estimated in 2008 at 640 light-years, yielding a mean absolute magnitude of about −6.02. Less than 10 million years old, Betelgeuse has evolved rapidly because of its high mass. Having been ejected from its birthplace in the Orion OB1 Association—which includes the stars in Orion's Belt—this crimson runaway has been observed moving through the interstellar medium at a supersonic speed of 30 km/s, creating a bow shock over 4 light-years wide. Currently in a late stage of stellar evolution, the supergiant is expected to proceed through its life cycle before exploding as a type II supernova within the next million years. An observation by the Herschel Space Observatory in January 2013 revealed that the star's winds are crashing against the surrounding interstellar medium.In 1920, Betelgeuse became the second star (after the Sun) to have the angular size of its photosphere measured. Since then, researchers have used telescopes with different technical parameters to measure the stellar giant, often with conflicting results. Studies since 1990 have produced an angular diameter (apparent size) ranging from 0.043 to 0.056 arcseconds, an incongruity largely caused by the star's tendency to periodically change shape. Due to limb darkening, variability, and angular diameters that vary with wavelength, many of the star's properties are not yet known with any certainty. Adding to these challenges, the surface of Betelgeuse is obscured by a complex, asymmetric envelope roughly 250 times the size of the star, caused by colossal mass loss.".
- Betelgeuse thumbnail Position_Alpha_Ori.png?width=300.
- Betelgeuse wikiPageExternalLink ap100106.html.
- Betelgeuse wikiPageExternalLink ap101023.html.
- Betelgeuse wikiPageExternalLink irregions.html.
- Betelgeuse wikiPageExternalLink betel.html.
- Betelgeuse wikiPageExternalLink ap000725.html.
- Betelgeuse wikiPageExternalLink ap001222.html.
- Betelgeuse wikiPageExternalLink ap071225.html.
- Betelgeuse wikiPageExternalLink rsgintro_en.html.
- Betelgeuse wikiPageID "53878".
- Betelgeuse wikiPageLength "142387".
- Betelgeuse wikiPageOutDegree "434".
- Betelgeuse wikiPageRevisionID "708317482".
- Betelgeuse wikiPageWikiLink 2012_phenomenon.
- Betelgeuse wikiPageWikiLink 25_Orionis.
- Betelgeuse wikiPageWikiLink 53_Arietis.
- Betelgeuse wikiPageWikiLink AE_Aurigae.
- Betelgeuse wikiPageWikiLink Absolute_magnitude.
- Betelgeuse wikiPageWikiLink Adaptive_optics.
- Betelgeuse wikiPageWikiLink Albert_A._Michelson.
- Betelgeuse wikiPageWikiLink Aldebaran.
- Betelgeuse wikiPageWikiLink Alfonsine_tables.
- Betelgeuse wikiPageWikiLink Aluminium_oxide.
- Betelgeuse wikiPageWikiLink American_Association_of_Variable_Star_Observers.
- Betelgeuse wikiPageWikiLink Angelo_Secchi.
- Betelgeuse wikiPageWikiLink Angular_diameter.
- Betelgeuse wikiPageWikiLink Angular_resolution.
- Betelgeuse wikiPageWikiLink Antarctica.
- Betelgeuse wikiPageWikiLink Antares.
- Betelgeuse wikiPageWikiLink Antoine_Émile_Henry_Labeyrie.
- Betelgeuse wikiPageWikiLink Aperture.
- Betelgeuse wikiPageWikiLink Aperture_masking_interferometry.
- Betelgeuse wikiPageWikiLink Apparent_magnitude.
- Betelgeuse wikiPageWikiLink Arabic.
- Betelgeuse wikiPageWikiLink Archetype.
- Betelgeuse wikiPageWikiLink Arcturus.
- Betelgeuse wikiPageWikiLink Ardra_(nakshatra).
- Betelgeuse wikiPageWikiLink Asteroid_belt.
- Betelgeuse wikiPageWikiLink Astrology.
- Betelgeuse wikiPageWikiLink Astrometry.
- Betelgeuse wikiPageWikiLink Astronomical_seeing.
- Betelgeuse wikiPageWikiLink Astronomical_unit.
- Betelgeuse wikiPageWikiLink Astronomy_(magazine).
- Betelgeuse wikiPageWikiLink Astronomy_Picture_of_the_Day.
- Betelgeuse wikiPageWikiLink August_Derleth.
- Betelgeuse wikiPageWikiLink Batak.
- Betelgeuse wikiPageWikiLink Bayer_designation.
- Betelgeuse wikiPageWikiLink Beetlejuice.
- Betelgeuse wikiPageWikiLink Bernard_Lyot_Telescope.
- Betelgeuse wikiPageWikiLink Beta_Crucis.
- Betelgeuse wikiPageWikiLink Betelguese,_a_Trip_Through_Hell.
- Betelgeuse wikiPageWikiLink Black_and_Bluebird_(song).
- Betelgeuse wikiPageWikiLink Blue_supergiant.
- Betelgeuse wikiPageWikiLink Boss_General_Catalogue.
- Betelgeuse wikiPageWikiLink Bow_shocks_in_astrophysics.
- Betelgeuse wikiPageWikiLink Bright_Star_Catalogue.
- Betelgeuse wikiPageWikiLink CNO_cycle.
- Betelgeuse wikiPageWikiLink Cambridge_Optical_Aperture_Synthesis_Telescope.
- Betelgeuse wikiPageWikiLink Carbon.
- Betelgeuse wikiPageWikiLink Carbon-burning_process.
- Betelgeuse wikiPageWikiLink Carbon_monoxide.
- Betelgeuse wikiPageWikiLink Catalog_of_Components_of_Double_and_Multiple_Stars.
- Betelgeuse wikiPageWikiLink Catalogues_of_Fundamental_Stars.
- Betelgeuse wikiPageWikiLink Category:Arabic_words_and_phrases.
- Betelgeuse wikiPageWikiLink Category:Bayer_objects.
- Betelgeuse wikiPageWikiLink Category:Durchmusterung_objects.
- Betelgeuse wikiPageWikiLink Category:Flamsteed_objects.
- Betelgeuse wikiPageWikiLink Category:HR_objects.
- Betelgeuse wikiPageWikiLink Category:Henry_Draper_Catalogue_objects.
- Betelgeuse wikiPageWikiLink Category:Hipparcos_objects.
- Betelgeuse wikiPageWikiLink Category:M-type_supergiants.
- Betelgeuse wikiPageWikiLink Category:Orion_(constellation).
- Betelgeuse wikiPageWikiLink Category:Semiregular_variable_stars.
- Betelgeuse wikiPageWikiLink Category:Stars_with_proper_names.
- Betelgeuse wikiPageWikiLink Cavendish_Astrophysics_Group.
- Betelgeuse wikiPageWikiLink Celestial_pole.
- Betelgeuse wikiPageWikiLink Celestial_sphere.
- Betelgeuse wikiPageWikiLink Charles_H._Townes.
- Betelgeuse wikiPageWikiLink Chinese_astronomy.
- Betelgeuse wikiPageWikiLink Chromosphere.
- Betelgeuse wikiPageWikiLink Circumstellar_envelope.
- Betelgeuse wikiPageWikiLink Classical_antiquity.
- Betelgeuse wikiPageWikiLink Cobalt.
- Betelgeuse wikiPageWikiLink Color_index.
- Betelgeuse wikiPageWikiLink Comet.
- Betelgeuse wikiPageWikiLink Common_Era.
- Betelgeuse wikiPageWikiLink Convection.
- Betelgeuse wikiPageWikiLink Convection_cell.
- Betelgeuse wikiPageWikiLink Convection_zone.
- Betelgeuse wikiPageWikiLink Coptic_language.
- Betelgeuse wikiPageWikiLink Cosmic_noise.
- Betelgeuse wikiPageWikiLink Cthulhu_Mythos.
- Betelgeuse wikiPageWikiLink Cthulhu_Mythos_deities.
- Betelgeuse wikiPageWikiLink Dave_Matthews_Band.
- Betelgeuse wikiPageWikiLink Deneb.
- Betelgeuse wikiPageWikiLink Depth_perception.
- Betelgeuse wikiPageWikiLink Douglas_Adams.
- Betelgeuse wikiPageWikiLink Durchmusterung.
- Betelgeuse wikiPageWikiLink Dynamo_theory.