Matches in DBpedia 2016-04 for { <http://dbpedia.org/resource/Spiral_galaxy> ?p ?o }
- Spiral_galaxy abstract "A spiral galaxy is a certain kind of galaxy originally described by Edwin Hubble in his 1936 work The Realm of the Nebulae and, as such, forms part of the Hubble sequence. Spiral galaxies consist of a flat, rotating disc containing stars, gas and dust, and a central concentration of stars known as the bulge. These are surrounded by a much fainter halo of stars, many of which reside in globular clusters.Spiral galaxies are named for the spiral structures that extend from the center into the galactic disc. The spiral arms are sites of ongoing star formation and are brighter than the surrounding disc because of the young, hot OB stars that inhabit them.Roughly two-thirds of all spirals are observed to have an additional component in the form of a bar-like structure, extending from the central bulge, at the ends of which the spiral arms begin. The proportion of barred spirals relative to their barless cousins has changed over the history of the Universe, with only about 10% containing bars about 8 billion years ago, to roughly a quarter 2.5 billion years ago, until present, where over two-thirds of the galaxies in the visible universe (Hubble volume) have bars.Our own Milky Way has recently (in the 1990s) been confirmed to be a barred spiral, although the bar itself is difficult to observe from the Earth's current position within the galactic disc. The most convincing evidence for its existence comes from a recent survey, performed by the Spitzer Space Telescope, of stars in the galactic center.Together with irregular galaxies, spiral galaxies make up approximately 60% of galaxies in the local Universe. They are mostly found in low-density regions and are rare in the centers of galaxy clusters.".
- Spiral_galaxy thumbnail M101_hires_STScI-PRC2006-10a.jpg?width=300.
- Spiral_galaxy wikiPageExternalLink spiral.html.
- Spiral_galaxy wikiPageExternalLink spir.html.
- Spiral_galaxy wikiPageExternalLink text.asp?pid=1080.
- Spiral_galaxy wikiPageExternalLink SpiralGalaxies.html.
- Spiral_galaxy wikiPageExternalLink sirtf.
- Spiral_galaxy wikiPageID "207620".
- Spiral_galaxy wikiPageLength "24597".
- Spiral_galaxy wikiPageOutDegree "132".
- Spiral_galaxy wikiPageRevisionID "706826403".
- Spiral_galaxy wikiPageWikiLink Active_galactic_nucleus.
- Spiral_galaxy wikiPageWikiLink Andromeda_Galaxy.
- Spiral_galaxy wikiPageWikiLink BX442.
- Spiral_galaxy wikiPageWikiLink Barred_spiral_galaxy.
- Spiral_galaxy wikiPageWikiLink Bertil_Lindblad.
- Spiral_galaxy wikiPageWikiLink Brady_Haran.
- Spiral_galaxy wikiPageWikiLink Bulge_(astronomy).
- Spiral_galaxy wikiPageWikiLink Category:Galaxy_morphological_types.
- Spiral_galaxy wikiPageWikiLink Category:Spiral_galaxies.
- Spiral_galaxy wikiPageWikiLink Category:Spirals.
- Spiral_galaxy wikiPageWikiLink Cepheid_variable.
- Spiral_galaxy wikiPageWikiLink Chia-Chiao_Lin.
- Spiral_galaxy wikiPageWikiLink Cosmic_dust.
- Spiral_galaxy wikiPageWikiLink Dark_matter.
- Spiral_galaxy wikiPageWikiLink Density_wave_theory.
- Spiral_galaxy wikiPageWikiLink Disc_(galaxy).
- Spiral_galaxy wikiPageWikiLink Disc_galaxy.
- Spiral_galaxy wikiPageWikiLink Dwarf_elliptical_galaxy.
- Spiral_galaxy wikiPageWikiLink Dwarf_galaxy.
- Spiral_galaxy wikiPageWikiLink Dwarf_spheroidal_galaxy.
- Spiral_galaxy wikiPageWikiLink Edwin_Hubble.
- Spiral_galaxy wikiPageWikiLink Elliptical_galaxy.
- Spiral_galaxy wikiPageWikiLink File:M101_hires_STScI-PRC2006-10a.jpg.
- Spiral_galaxy wikiPageWikiLink Frank_Shu.
- Spiral_galaxy wikiPageWikiLink Galactic_Center.
- Spiral_galaxy wikiPageWikiLink Galactic_coordinate_system.
- Spiral_galaxy wikiPageWikiLink Galactic_corona.
- Spiral_galaxy wikiPageWikiLink Galactic_halo.
- Spiral_galaxy wikiPageWikiLink Galactic_plane.
- Spiral_galaxy wikiPageWikiLink Galaxy.
- Spiral_galaxy wikiPageWikiLink Galaxy_color–magnitude_diagram.
- Spiral_galaxy wikiPageWikiLink Galaxy_filament.
- Spiral_galaxy wikiPageWikiLink Galaxy_formation_and_evolution.
- Spiral_galaxy wikiPageWikiLink Galaxy_merger.
- Spiral_galaxy wikiPageWikiLink Galaxy_morphological_classification.
- Spiral_galaxy wikiPageWikiLink Galaxy_rotation_curve.
- Spiral_galaxy wikiPageWikiLink Globular_cluster.
- Spiral_galaxy wikiPageWikiLink Grand_design_spiral_galaxy.
- Spiral_galaxy wikiPageWikiLink Great_Debate_(astronomy).
- Spiral_galaxy wikiPageWikiLink Groombridge_1830.
- Spiral_galaxy wikiPageWikiLink Harlow_Shapley.
- Spiral_galaxy wikiPageWikiLink Heber_Doust_Curtis.
- Spiral_galaxy wikiPageWikiLink Hubble_sequence.
- Spiral_galaxy wikiPageWikiLink Hubble_volume.
- Spiral_galaxy wikiPageWikiLink Intermediate_spiral_galaxy.
- Spiral_galaxy wikiPageWikiLink Interstellar_medium.
- Spiral_galaxy wikiPageWikiLink Irregular_galaxy.
- Spiral_galaxy wikiPageWikiLink Jeans_instability.
- Spiral_galaxy wikiPageWikiLink Kapteyns_Star.
- Spiral_galaxy wikiPageWikiLink Ken_Freeman_(astronomer).
- Spiral_galaxy wikiPageWikiLink Lenticular_galaxy.
- Spiral_galaxy wikiPageWikiLink Lick_Observatory.
- Spiral_galaxy wikiPageWikiLink List_of_galaxies.
- Spiral_galaxy wikiPageWikiLink List_of_nearest_galaxies.
- Spiral_galaxy wikiPageWikiLink Metallicity.
- Spiral_galaxy wikiPageWikiLink Milky_Way.
- Spiral_galaxy wikiPageWikiLink Molecular_cloud.
- Spiral_galaxy wikiPageWikiLink Mount_Wilson_Observatory.
- Spiral_galaxy wikiPageWikiLink M–sigma_relation.
- Spiral_galaxy wikiPageWikiLink Nebula.
- Spiral_galaxy wikiPageWikiLink Newtonian_dynamics.
- Spiral_galaxy wikiPageWikiLink OB_star.
- Spiral_galaxy wikiPageWikiLink Observable_universe.
- Spiral_galaxy wikiPageWikiLink Orbit.
- Spiral_galaxy wikiPageWikiLink Orbital_inclination.
- Spiral_galaxy wikiPageWikiLink Pinwheel_Galaxy.
- Spiral_galaxy wikiPageWikiLink Proper_motion.
- Spiral_galaxy wikiPageWikiLink Protostar.
- Spiral_galaxy wikiPageWikiLink Red_dwarf.
- Spiral_galaxy wikiPageWikiLink Retrograde_and_prograde_motion.
- Spiral_galaxy wikiPageWikiLink Ring_galaxy.
- Spiral_galaxy wikiPageWikiLink SSPSF_model.
- Spiral_galaxy wikiPageWikiLink Sagittarius_A*.
- Spiral_galaxy wikiPageWikiLink Sagittarius_Dwarf_Spheroidal_Galaxy.
- Spiral_galaxy wikiPageWikiLink Seyfert_galaxy.
- Spiral_galaxy wikiPageWikiLink Shock_wave.
- Spiral_galaxy wikiPageWikiLink Spheroid.
- Spiral_galaxy wikiPageWikiLink Spitzer_Space_Telescope.
- Spiral_galaxy wikiPageWikiLink Star.
- Spiral_galaxy wikiPageWikiLink Starburst_galaxy.
- Spiral_galaxy wikiPageWikiLink Stellar_population.
- Spiral_galaxy wikiPageWikiLink Sun.
- Spiral_galaxy wikiPageWikiLink Sunflower_Galaxy.
- Spiral_galaxy wikiPageWikiLink Supermassive_black_hole.
- Spiral_galaxy wikiPageWikiLink The_Realm_of_the_Nebulae.
- Spiral_galaxy wikiPageWikiLink Timeline_of_knowledge_about_galaxies,_clusters_of_galaxies,_and_large-scale_structure.
- Spiral_galaxy wikiPageWikiLink Triangulum_Galaxy.
- Spiral_galaxy wikiPageWikiLink Tully–Fisher_relation.
- Spiral_galaxy wikiPageWikiLink Unbarred_spiral_galaxy.