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Matches in DBpedia 2016-04 for { <http://dbpedia.org/resource/Nemesis_(hypothetical_star)> ?p ?o }

• Nemesis_(hypothetical_star) abstract "Nemesis is a hypothetical red dwarf or brown dwarf, originally postulated in 1984 to be orbiting the Sun at a distance of about 95,000 AU (1.5 light-years), somewhat beyond the Oort cloud, to explain a perceived cycle of mass extinctions in the geological record, which seem to occur more often at intervals of 26 million years. As of 2012, over 1800 brown dwarfs have been identified and none of them are inside the Solar System. There are actually fewer brown dwarfs in our cosmic neighborhood than previously thought. Rather than one star for every brown dwarf, there may be as many as six stars for every brown dwarf. The majority of solar-type stars are single.More recent theories suggest that other forces, like close passage of other stars, or the angular effect of the galactic gravity plane working against the outer solar orbital plane, may be the cause of orbital perturbations of some outer Solar System objects. In 2011, Coryn Bailer-Jones analysed craters on the surface of the Earth and reached the conclusion that the earlier findings of simple periodic patterns (implying periodic comet showers dislodged by a hypothetical Nemesis star) to be statistical artifacts, and found that the crater record shows no evidence for Nemesis. However, in 2010, A.L. Melott and R.K. Bambach found evidence in the fossil record confirming the extinction event periodicity originally claimed by Raup & Sepkoski in 1984, but at a higher confidence level and over a time period nearly twice as long. The Infrared Astronomical Satellite (IRAS) failed to discover Nemesis in the 1980s. The 2MASS astronomical survey, which ran from 1997 to 2001, failed to detect an additional star or brown dwarf in the Solar System.Using newer and more powerful infrared telescope technology, able to detect brown dwarfs as cool as 150 kelvins out to a distance of 10 light-years from the Sun, results from the Wide-field Infrared Survey Explorer (WISE survey) have not detected Nemesis. In 2011, David Morrison, a senior scientist at NASA known for his work in risk assessment of near Earth objects, has written that there is no confidence in the existence of an object like Nemesis, since it should have been detected in infrared sky surveys.".
• Nemesis_(hypothetical_star) wikiPageExternalLink lbl-nem.htm.
• Nemesis_(hypothetical_star) wikiPageExternalLink Lunar_impacts_Nemesis.pdf.
• Nemesis_(hypothetical_star) wikiPageExternalLink getting-wise-about-nemesis.
• Nemesis_(hypothetical_star) wikiPageExternalLink nemsis_myth?filter_order=L.
• Nemesis_(hypothetical_star) wikiPageExternalLink nemesis_010320-1.html.
• Nemesis_(hypothetical_star) wikiPageExternalLink Evidence_Mounts_For_Companion_Star_To_Our_Sun.html.
• Nemesis_(hypothetical_star) wikiPageExternalLink acta.
• Nemesis_(hypothetical_star) wikiPageExternalLink 0104251.
• Nemesis_(hypothetical_star) wikiPageExternalLink 0002255.
• Nemesis_(hypothetical_star) wikiPageExternalLink watch?v=ERy-MTfgulc.
• Nemesis_(hypothetical_star) wikiPageID "89344".
• Nemesis_(hypothetical_star) wikiPageLength "22430".
• Nemesis_(hypothetical_star) wikiPageOutDegree "102".
• Nemesis_(hypothetical_star) wikiPageRevisionID "707324084".
• Nemesis_(hypothetical_star) wikiPageWikiLink 2MASS.
• Nemesis_(hypothetical_star) wikiPageWikiLink 90377_Sedna.
• Nemesis_(hypothetical_star) wikiPageWikiLink Adrian_Melott.
• Nemesis_(hypothetical_star) wikiPageWikiLink Apparent_magnitude.
• Nemesis_(hypothetical_star) wikiPageWikiLink Artifact_(error).
• Nemesis_(hypothetical_star) wikiPageWikiLink Astronomer.
• Nemesis_(hypothetical_star) wikiPageWikiLink Astronomical_survey.
• Nemesis_(hypothetical_star) wikiPageWikiLink Astronomical_unit.
• Nemesis_(hypothetical_star) wikiPageWikiLink Barnards_Star.
• Nemesis_(hypothetical_star) wikiPageWikiLink Binary_star.
• Nemesis_(hypothetical_star) wikiPageWikiLink Black_Moon_Clan.
• Nemesis_(hypothetical_star) wikiPageWikiLink Brown_dwarf.
• Nemesis_(hypothetical_star) wikiPageWikiLink Category:Brown_dwarfs.
• Nemesis_(hypothetical_star) wikiPageWikiLink Category:Doomsday_scenarios.
• Nemesis_(hypothetical_star) wikiPageWikiLink Category:Extinction_events.
• Nemesis_(hypothetical_star) wikiPageWikiLink Category:Hypothetical_bodies_of_the_Solar_System.
• Nemesis_(hypothetical_star) wikiPageWikiLink Category:Hypothetical_stars.
• Nemesis_(hypothetical_star) wikiPageWikiLink Category:Hypothetical_trans-Neptunian_objects.
• Nemesis_(hypothetical_star) wikiPageWikiLink Category:M-type_main-sequence_stars.
• Nemesis_(hypothetical_star) wikiPageWikiLink Category:Oort_cloud.
• Nemesis_(hypothetical_star) wikiPageWikiLink Category:Solar_System_dynamic_theories.
• Nemesis_(hypothetical_star) wikiPageWikiLink Category:Theories.
• Nemesis_(hypothetical_star) wikiPageWikiLink Comet.
• Nemesis_(hypothetical_star) wikiPageWikiLink Cretaceous–Paleogene_extinction_event.
• Nemesis_(hypothetical_star) wikiPageWikiLink David_M._Raup.
• Nemesis_(hypothetical_star) wikiPageWikiLink David_Morrison_(astrophysicist).
• Nemesis_(hypothetical_star) wikiPageWikiLink Death_Star_(disambiguation).
• Nemesis_(hypothetical_star) wikiPageWikiLink Eocene–Oligocene_extinction_event.
• Nemesis_(hypothetical_star) wikiPageWikiLink Extinction_event.
• Nemesis_(hypothetical_star) wikiPageWikiLink Fossil.
• Nemesis_(hypothetical_star) wikiPageWikiLink Giant_impact_hypothesis.
• Nemesis_(hypothetical_star) wikiPageWikiLink History_of_Earth.
• Nemesis_(hypothetical_star) wikiPageWikiLink Hydra_(constellation).
• Nemesis_(hypothetical_star) wikiPageWikiLink Hypothesis.
• Nemesis_(hypothetical_star) wikiPageWikiLink Hypothetical_astronomical_object.
• Nemesis_(hypothetical_star) wikiPageWikiLink IRAS.
• Nemesis_(hypothetical_star) wikiPageWikiLink Impact_event.
• Nemesis_(hypothetical_star) wikiPageWikiLink Invertebrate.
• Nemesis_(hypothetical_star) wikiPageWikiLink Jack_Sepkoski.
• Nemesis_(hypothetical_star) wikiPageWikiLink Kelvin.
• Nemesis_(hypothetical_star) wikiPageWikiLink Large_Synoptic_Survey_Telescope.
• Nemesis_(hypothetical_star) wikiPageWikiLink Leuschner_Observatory.
• Nemesis_(hypothetical_star) wikiPageWikiLink Light-year.
• Nemesis_(hypothetical_star) wikiPageWikiLink List_of_Sailor_Moon_R_episodes.
• Nemesis_(hypothetical_star) wikiPageWikiLink List_of_nearest_stars_and_brown_dwarfs.
• Nemesis_(hypothetical_star) wikiPageWikiLink Malmquist_bias.
• Nemesis_(hypothetical_star) wikiPageWikiLink Marc_Davis_(astronomer).
• Nemesis_(hypothetical_star) wikiPageWikiLink Michael_E._Brown.
• Nemesis_(hypothetical_star) wikiPageWikiLink Nature_(journal).
• Nemesis_(hypothetical_star) wikiPageWikiLink Nemesis_(Asimov_novel).
• Nemesis_(hypothetical_star) wikiPageWikiLink Nibiru_cataclysm.
• Nemesis_(hypothetical_star) wikiPageWikiLink Oil_&_Gold.
• Nemesis_(hypothetical_star) wikiPageWikiLink Oort_cloud.
• Nemesis_(hypothetical_star) wikiPageWikiLink Orbital_eccentricity.
• Nemesis_(hypothetical_star) wikiPageWikiLink Paleontology.
• Nemesis_(hypothetical_star) wikiPageWikiLink Pan-STARRS.
• Nemesis_(hypothetical_star) wikiPageWikiLink Parallax.
• Nemesis_(hypothetical_star) wikiPageWikiLink Perihelion_and_aphelion.
• Nemesis_(hypothetical_star) wikiPageWikiLink Perturbation_(astronomy).
• Nemesis_(hypothetical_star) wikiPageWikiLink Piet_Hut.
• Nemesis_(hypothetical_star) wikiPageWikiLink Planet_Nine.
• Nemesis_(hypothetical_star) wikiPageWikiLink Planets_beyond_Neptune.
• Nemesis_(hypothetical_star) wikiPageWikiLink Proper_motion.
• Nemesis_(hypothetical_star) wikiPageWikiLink Protozoa.
• Nemesis_(hypothetical_star) wikiPageWikiLink Red_dwarf.
• Nemesis_(hypothetical_star) wikiPageWikiLink Richard_A._Muller.
• Nemesis_(hypothetical_star) wikiPageWikiLink Sailor_Moon.
• Nemesis_(hypothetical_star) wikiPageWikiLink Saturn.
• Nemesis_(hypothetical_star) wikiPageWikiLink Semi-major_axis.
• Nemesis_(hypothetical_star) wikiPageWikiLink Shiva_Hypothesis.
• Nemesis_(hypothetical_star) wikiPageWikiLink Shriekback.
• Nemesis_(hypothetical_star) wikiPageWikiLink Solar_System.
• Nemesis_(hypothetical_star) wikiPageWikiLink Star_catalogue.
• Nemesis_(hypothetical_star) wikiPageWikiLink Substellar_object.
• Nemesis_(hypothetical_star) wikiPageWikiLink Sun.
• Nemesis_(hypothetical_star) wikiPageWikiLink Theia_(planet).
• Nemesis_(hypothetical_star) wikiPageWikiLink Time_series.
• Nemesis_(hypothetical_star) wikiPageWikiLink Trans-Neptunian_object.
• Nemesis_(hypothetical_star) wikiPageWikiLink Tyche_(hypothetical_planet).
• Nemesis_(hypothetical_star) wikiPageWikiLink University_of_California,_Berkeley.
• Nemesis_(hypothetical_star) wikiPageWikiLink Vertebrate.
• Nemesis_(hypothetical_star) wikiPageWikiLink Vulcan_(hypothetical_planet).
• Nemesis_(hypothetical_star) wikiPageWikiLink Wide-field_Infrared_Survey_Explorer.
• Nemesis_(hypothetical_star) wikiPageWikiLink X-ray.
• Nemesis_(hypothetical_star) wikiPageWikiLink File:Oort_cloud_Sedna_orbit.svg.

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