]> 2008/06/10 OpenCyc Knowledge Base Copyright© 2001-2008 Cycorp, Inc., http://www.cyc.com/, Austin, TX, USA This file contains an OWL representation of information contained in the OpenCyc Knowledge Base. The content of this OWL file is licensed under the Creative Commons Attribution 3.0 license whose text can be found at http://creativecommons.org/licenses/by/3.0/legalcode. The content of this OWL file, including the OpenCyc content it represents, constitutes the "Work" referred to in the Creative Commons license. The terms of this license equally apply to, without limitation, renamings and other logically equivalent reformulations of the content of this OWL file (or portions thereof) in any natural or formal language, as well as to derivations of this content or inclusion of it in other ontologies. externalID A unique, language-neutral, variable-sized identifier for a concept that can be used to refer unambiguously to that concept across OWL exports or across Cyc inference engines. label A natural-language representation for a concept that is both human readable and readable by the Cyc inference engine. These terms are not guaranteed to refer to the same concept across time but are guaranteed to be consistent within a particular OWL export. Use 'cycAnnot:externalID' for unambiguously referring to a concept across OWL exports or across Cyc inference engines. star Star A self-luminous gaseous astronomical object, including the sun. stars http://en.wikipedia.org/wiki/Star There are essentially two sorts of histories of stars which involve dwarf stages. Red dwarfs burn for around 30 billion years before their conversion of hydrogen into helium halts. They then become brown dwarfs and finally black dwarfs, when they stop cooling. Stars like our sun will become red giants before becoming white dwarfs, when their conversion of hydrogen into helium stops. Finally they too will become black dwarfs when they stop cooling. DwarfStar black dwarf This is the collection of variable stars. These are stars which appear to vary in intensity over short periods of time. They are a favorite object of amateur astronomers. variable star VariableStar NeutronStar neutron star This is the collection of neutron stars. A neutron star is the massive object left after a supernova is created. It typically has a mass about 1.4 times that of the sun, but with a radius of only 5 miles. If the neutron star started as a massive enough sun, it will end up being too dense to support itself and will collapse, becoming a black hole. A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVi80ZwpEbGdrcN5Y29ycA" class="cyc_term">Star</a> (q.v.). Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rlxNJlmKqEdqAAAACs71DGQ" class="cyc_term">Sun</a> is a star that forms part of a solar system (see <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvgEQEZwpEbGdrcN5Y29ycA" class="cyc_term">PlanetarySystem</a>). Sun sun Capella-Star The star Capella in <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwBGLd5wpEbGdrcN5Y29ycA" class="cyc_term">Auriga_Constellation</a>. Capella The star Pollux in <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rv3X6ZZwpEbGdrcN5Y29ycA" class="cyc_term">Gemini_Constellation</a>. Pollux-Star Pollux Altair Altair-Star The star Altair in <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvywsH5wpEbGdrcN5Y29ycA" class="cyc_term">Aquila_Constellation</a>. Arcturus Arcturus-Star The star Arcturus in <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvel1u5wpEbGdrcN5Y29ycA" class="cyc_term">Bootes_Constellation</a>. Rigel-Star Rigel The star Rigel in <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVqIcJwpEbGdrcN5Y29ycA" class="cyc_term">Orion_Constellation</a>. The star Betelgeuse in <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVqIcJwpEbGdrcN5Y29ycA" class="cyc_term">Orion_Constellation</a>. Betelgeuse Betelgeuse-Star Antares-Star Antares The star Antares in <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwIAIU5wpEbGdrcN5Y29ycA" class="cyc_term">Scorpius_Constellation</a>. The star Castor in <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rv3X6ZZwpEbGdrcN5Y29ycA" class="cyc_term">Gemini_Constellation</a>. Castor Castor-Star Canopus-Star The star Canopus in <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwLRcB5wpEbGdrcN5Y29ycA" class="cyc_term">Carina_Constellation</a> Canopus Vega Vega-Star The star Vega in <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwMRFC5wpEbGdrcN5Y29ycA" class="cyc_term">Lyra_Constellation</a>. Procyon-Star The star Procyon in <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwEf-PpwpEbGdrcN5Y29ycA" class="cyc_term">CanisMinor_Constellation</a>. Procyon Fomalhaut-Star The star Fomalhaut in <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvXVnUZwpEbGdrcN5Y29ycA" class="cyc_term">PiscisAustrinus_Constellation</a> Fomalhaut The star Sirius in <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwFaqeJwpEbGdrcN5Y29ycA" class="cyc_term">CanisMajor_Constellation</a>. This is the brightest <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVi80ZwpEbGdrcN5Y29ycA" class="cyc_term">Star</a> visible from <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVkL_pwpEbGdrcN5Y29ycA" class="cyc_term">PlanetEarth</a>. Sirius Sirius-Star The star Aldebaran in <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvuOD_5wpEbGdrcN5Y29ycA" class="cyc_term">Taurus_Constellation</a>. Aldebaran-Star Aldebaran Deneb-Star Deneb The star Deneb in <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvhD4Y5wpEbGdrcN5Y29ycA" class="cyc_term">Cygnus_Constellation</a>. Polaris-TheStar The star Polaris, also known as the North Star the North Star Regulus The star Regulus in <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvWB0gpwpEbGdrcN5Y29ycA" class="cyc_term">Leo_Constellation</a>. Regulus-Star Spica Spica-Star The star Spica in <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rv2PbsJwpEbGdrcN5Y29ycA" class="cyc_term">Virgo_Constellation</a>. Tau Boo The star Tau Boo, which the extrasolar planet Tau Boo b orbits. TauBoo-Star Pretty String (<a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwLSVCpwpEbGdrcN5Y29ycA" class="cyc_term">prettyString</a> TERM STRING) means that STRING is the English word or expression (sequence of words) commonly used to refer to TERM. The predicate <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwLSVCpwpEbGdrcN5Y29ycA" class="cyc_term">prettyString</a> is used by the code which generates CycL to English paraphrases, but its applicability is not restricted to this use. prettyString star A self-luminous gaseous astronomical object, including the sun. Star A collection of collections. Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvWXYgJwpEbGdrcN5Y29ycA" class="cyc_term">ExistingObjectType</a> is a specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVj27ZwpEbGdrcN5Y29ycA" class="cyc_term">PartiallyTangible</a> (q.v.). Moreover, each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvWXYgJwpEbGdrcN5Y29ycA" class="cyc_term">ExistingObjectType</a> is a collection that is temporally stuff-like (see <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVitN5wpEbGdrcN5Y29ycA" class="cyc_term">TemporalStuffType</a>) but physically-spatially object-like (see <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVirnZwpEbGdrcN5Y29ycA" class="cyc_term">ObjectType</a>) -- i.e. object-like with respect to some physical-spatial part-whole predicate (e.g. some specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4r8a2smPXcQdiEoJhcx65EiQ" class="cyc_term">properPhysicalDecompositions</a>). Consider the collection <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwJaXepwpEbGdrcN5Y29ycA" class="cyc_term">BookCopy</a>. <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwJaXepwpEbGdrcN5Y29ycA" class="cyc_term">BookCopy</a> is a specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVj27ZwpEbGdrcN5Y29ycA" class="cyc_term">PartiallyTangible</a>. Further, <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwJaXepwpEbGdrcN5Y29ycA" class="cyc_term">BookCopy</a> is temporally stuff-like: any one of the <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvWn4OZwpEbGdrcN5Y29ycA" class="cyc_term">timeSlices</a> of a given copy <code>COPY</code> of (say) "Moby Dick" is still a copy of "Moby Dick". (Most collections of tangible objects are temporally stuff-like in this way.) But <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwJaXepwpEbGdrcN5Y29ycA" class="cyc_term">BookCopy</a> is spatially object-like: if we take a scalpel and slice <code>COPY</code> into ten pieces, each piece is not a copy of "Moby Dick". So <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwJaXepwpEbGdrcN5Y29ycA" class="cyc_term">BookCopy</a> is an instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvWXYgJwpEbGdrcN5Y29ycA" class="cyc_term">ExistingObjectType</a>. See also <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVir35wpEbGdrcN5Y29ycA" class="cyc_term">StuffType</a> and <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVny6pwpEbGdrcN5Y29ycA" class="cyc_term">ExistingStuffType</a>. ExistingObjectType type of object star A self-luminous gaseous astronomical object, including the sun. Star star A self-luminous gaseous astronomical object, including the sun. Star star A self-luminous gaseous astronomical object, including the sun. Star A collection of collections and a specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVirnZwpEbGdrcN5Y29ycA" class="cyc_term">ObjectType</a> (q.v.). Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rpPHhAOB1EdqAAAACs6hRXg" class="cyc_term">SpatiallyDisjointObjectType</a> is a collection C of spatial things (see <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjpUZwpEbGdrcN5Y29ycA" class="cyc_term">SpatialThing</a>), where each of the spatial things in C is spatially disjoint with the other spatial things in C. For example, the collection <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjaoJwpEbGdrcN5Y29ycA" class="cyc_term">Dog</a> is an instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rpPHhAOB1EdqAAAACs6hRXg" class="cyc_term">SpatiallyDisjointObjectType</a>, since dogs do not spatially overlap. Even pregnant dogs do not spatially overlap the pups they bear; rather, pregnant dogs contain their unborn pups. Other instances of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rpPHhAOB1EdqAAAACs6hRXg" class="cyc_term">SpatiallyDisjointObjectType</a> include <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwVGrQ5wpEbGdrcN5Y29ycA" class="cyc_term">LatitudeLine</a>, <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvW4n1pwpEbGdrcN5Y29ycA" class="cyc_term">CompactDisc_Audio</a>, and <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwR7UWZwpEbGdrcN5Y29ycA" class="cyc_term">PlanetaryBody</a>. An important specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rpPHhAOB1EdqAAAACs6hRXg" class="cyc_term">SpatiallyDisjointObjectType</a> is <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjlE5wpEbGdrcN5Y29ycA" class="cyc_term">SpatiallyDisjointRegionType</a> (a collection of specializations of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvViACZwpEbGdrcN5Y29ycA" class="cyc_term">GeographicalRegion</a>, such as <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjnZ5wpEbGdrcN5Y29ycA" class="cyc_term">City</a> and <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rwT-n15wpEbGdrcN5Y29ycA" class="cyc_term">TrueContinent</a>). spatially disjoint object type SpatiallyDisjointObjectType A specialization of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjReJwpEbGdrcN5Y29ycA" class="cyc_term">AstronomicalObject</a> (q.v.). Each instance of <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVikt5wpEbGdrcN5Y29ycA" class="cyc_term">AstronomicalBody</a> is an astronomical object that is an individual body, as opposed to a group or system of such bodies. Specializations include <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVjRL5wpEbGdrcN5Y29ycA" class="cyc_term">Planet</a> and <a href="http://sw.opencyc.org/2008/06/10/concept/Mx4rvVi80ZwpEbGdrcN5Y29ycA" class="cyc_term">Star</a>. Note that this collection includes only natural bodies; artificially-made objects such as spaceships and communications satellites are excluded. AstronomicalBody heavenly body star A self-luminous gaseous astronomical object, including the sun. Star