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Matches in DBpedia 2015-10 for { <http://dbpedia.org/resource/Oort_cloud> ?p ?o }

• Oort_cloud abstract "The Oort cloud (/ˈɔrt/ or /ˈʊərt/) or Öpik–Oort cloud, named after Dutch astronomer Jan Oort and Estonian astronomer Ernst Öpik, is a theoretical spherical cloud of predominantly icy planetesimals believed to surround the Sun at a distance of up to around 100,000 AU (2 ly). This places it at almost half of the distance to Proxima Centauri, the nearest star to the Sun, and in interstellar space. The Kuiper belt and the scattered disc, the other two reservoirs of trans-Neptunian objects, are less than one thousandth as far from the Sun as the Oort cloud. The outer limit of the Oort cloud defines the cosmographical boundary of the Solar System and the region of the Sun's gravitational dominance.The Oort cloud is thought to comprise two regions: a spherical outer Oort cloud and a disc-shaped inner Oort cloud, or Hills cloud. Objects in the Oort cloud are largely composed of ices, such as water, ammonia, and methane.Astronomers conjecture that the matter composing the Oort cloud formed closer to the Sun and was scattered far into space by the gravitational effects of the giant planets early in the Solar System's evolution. Although no confirmed direct observations of the Oort cloud have been made, it may be the source of all long-period and Halley-type comets entering the inner Solar System, and many of the centaurs and Jupiter-family comets as well. The outer Oort cloud is only loosely bound to the Solar System, and thus is easily affected by the gravitational pull both of passing stars and of the Milky Way itself. These forces occasionally dislodge comets from their orbits within the cloud and send them towards the inner Solar System. Based on their orbits, most of the short-period comets may come from the scattered disc, but some may still have originated from the Oort cloud.".
• Oort_cloud thumbnail PIA17046_-_Voyager_1_Goes_Interstellar.jpg?width=300.
• Oort_cloud wikiPageExternalLink 1994QJRAS..35....1M.
• Oort_cloud wikiPageExternalLink 1411.1844.
• Oort_cloud wikiPageExternalLink solarsystem.nasa.gov.
• Oort_cloud wikiPageExternalLink profile.cfm?Object=KBOs.
• Oort_cloud wikiPageExternalLink kboc.html.
• Oort_cloud wikiPageID "22385".
• Oort_cloud wikiPageLength "40758".
• Oort_cloud wikiPageOutDegree "124".
• Oort_cloud wikiPageRevisionID "683312643".
• Oort_cloud wikiPageWikiLink Absolute_magnitude.
• Oort_cloud wikiPageWikiLink All-sky_survey.
• Oort_cloud wikiPageWikiLink Ammonia.
• Oort_cloud wikiPageWikiLink Apsis.
• Oort_cloud wikiPageWikiLink ArXiv.
• Oort_cloud wikiPageWikiLink Astronomical_survey.
• Oort_cloud wikiPageWikiLink Astronomical_unit.
• Oort_cloud wikiPageWikiLink Brown_dwarf.
• Oort_cloud wikiPageWikiLink Carbon_monoxide.
• Oort_cloud wikiPageWikiLink Category:Asteroids.
• Oort_cloud wikiPageWikiLink Category:Astronomical_hypotheses.
• Oort_cloud wikiPageWikiLink Category:Comets.
• Oort_cloud wikiPageWikiLink Category:Discoveries_by_Jan_Oort.
• Oort_cloud wikiPageWikiLink Category:Hypothetical_trans-Neptunian_objects.
• Oort_cloud wikiPageWikiLink Category:Minor_planets.
• Oort_cloud wikiPageWikiLink Category:Oort_cloud.
• Oort_cloud wikiPageWikiLink Category:Spacecraft_escaping_the_Solar_System.
• Oort_cloud wikiPageWikiLink Category:Trans-Neptunian_region.
• Oort_cloud wikiPageWikiLink Centaur_(minor_planet).
• Oort_cloud wikiPageWikiLink Centaur_(planetoid).
• Oort_cloud wikiPageWikiLink Comet.
• Oort_cloud wikiPageWikiLink Comet_Hale–Bopp.
• Oort_cloud wikiPageWikiLink Comet_Shoemaker–Levy_9.
• Oort_cloud wikiPageWikiLink Cosmic_microwave_background.
• Oort_cloud wikiPageWikiLink Cosmography.
• Oort_cloud wikiPageWikiLink Crater_counting.
• Oort_cloud wikiPageWikiLink D-type_asteroid.
• Oort_cloud wikiPageWikiLink Dark_matter.
• Oort_cloud wikiPageWikiLink Dynamics_(mechanics).
• Oort_cloud wikiPageWikiLink Dynamics_(physics).
• Oort_cloud wikiPageWikiLink Ecliptic.
• Oort_cloud wikiPageWikiLink Electromagnetic_radiation.
• Oort_cloud wikiPageWikiLink Elliptic_orbit.
• Oort_cloud wikiPageWikiLink Ernst_Öpik.
• Oort_cloud wikiPageWikiLink Estonia.
• Oort_cloud wikiPageWikiLink Ethane.
• Oort_cloud wikiPageWikiLink Formation_and_evolution_of_the_Solar_System.
• Oort_cloud wikiPageWikiLink Galactic_tide.
• Oort_cloud wikiPageWikiLink Galaxy_rotation_curve.
• Oort_cloud wikiPageWikiLink Gas_giant.
• Oort_cloud wikiPageWikiLink Gliese_710.
• Oort_cloud wikiPageWikiLink Gravitation.
• Oort_cloud wikiPageWikiLink Gravity.
• Oort_cloud wikiPageWikiLink Halleys_Comet.
• Oort_cloud wikiPageWikiLink Harold_F._Levison.
• Oort_cloud wikiPageWikiLink Heliosphere.
• Oort_cloud wikiPageWikiLink Hydrogen_cyanide.
• Oort_cloud wikiPageWikiLink Hyperbola.
• Oort_cloud wikiPageWikiLink Inner_Solar_System.
• Oort_cloud wikiPageWikiLink Interstellar_comet.
• Oort_cloud wikiPageWikiLink Isotope.
• Oort_cloud wikiPageWikiLink Isotropy.
• Oort_cloud wikiPageWikiLink Jack_G._Hills.
• Oort_cloud wikiPageWikiLink Jan_Oort.
• Oort_cloud wikiPageWikiLink Julio_Ángel_Fernández.
• Oort_cloud wikiPageWikiLink Jupiter.
• Oort_cloud wikiPageWikiLink Kuiper_belt.
• Oort_cloud wikiPageWikiLink List_of_nearest_stars.
• Oort_cloud wikiPageWikiLink List_of_nearest_stars_and_brown_dwarfs.
• Oort_cloud wikiPageWikiLink List_of_periodic_comets.
• Oort_cloud wikiPageWikiLink List_of_possible_dwarf_planets.
• Oort_cloud wikiPageWikiLink List_of_trans-Neptunian_objects.
• Oort_cloud wikiPageWikiLink Logarithmic_scale.
• Oort_cloud wikiPageWikiLink Long-period_comet.
• Oort_cloud wikiPageWikiLink Methane.
• Oort_cloud wikiPageWikiLink Milky_Way.
• Oort_cloud wikiPageWikiLink Minor_planet.
• Oort_cloud wikiPageWikiLink Modified_Newtonian_dynamics.
• Oort_cloud wikiPageWikiLink Molecular_cloud.
• Oort_cloud wikiPageWikiLink Moon.
• Oort_cloud wikiPageWikiLink Nemesis_(hypothetical_star).
• Oort_cloud wikiPageWikiLink Neptune.
• Oort_cloud wikiPageWikiLink Open_cluster.
• Oort_cloud wikiPageWikiLink Outer_Solar_System.
• Oort_cloud wikiPageWikiLink Outer_planets.
• Oort_cloud wikiPageWikiLink Outgassing.
• Oort_cloud wikiPageWikiLink Parabolic_orbit.
• Oort_cloud wikiPageWikiLink Parabolic_trajectory.
• Oort_cloud wikiPageWikiLink Parallax.
• Oort_cloud wikiPageWikiLink Perihelion_and_aphelion.
• Oort_cloud wikiPageWikiLink Periodic_comet.
• Oort_cloud wikiPageWikiLink Perturbation_(astronomy).
• Oort_cloud wikiPageWikiLink Physics.
• Oort_cloud wikiPageWikiLink Plane_of_the_ecliptic.
• Oort_cloud wikiPageWikiLink Planet.
• Oort_cloud wikiPageWikiLink Planetesimal.
• Oort_cloud wikiPageWikiLink Protoplanetary_disc.
• Oort_cloud wikiPageWikiLink Protoplanetary_disk.
• Oort_cloud wikiPageWikiLink Proxima_Centauri.

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