stellar motions

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• Stellar kinematics — is the study of the movement of stars without needing to understand how they acquired their motion. This differs from stellar dynamics, which takes into account gravitational effects. The motion of a star relative to the Sun can provide useful… …   Wikipedia

• Stellar dynamics — is the branch of astrophysics which describes in a statistical way the collective motions of stars subject to their mutual gravity. The long range of gravity and the slow relaxation of stellar systems prevent the use of the methods of statistical …   Wikipedia

• Stellar drift — Stellar drift, or the motion of stars, is a necessary result of the lack of an absolute reference frame in special relativity. The term is used mainly in science fiction, however; in particular, the phenomenon affects stargates in the Stargate… …   Wikipedia

• Stellar association — A stellar association is a very loose star cluster, looser than both open clusters and globular clusters. Stellar associations will normally contain from 10 to 100 or more stars. The stars share a common origin, but have become gravitationally… …   Wikipedia

• Timeline of stellar astronomy — Timeline of stellar astronomy* 134 BC Hipparchus creates the magnitude scale of stellar apparent luminosities * 185 AD Chinese astronomers become the first to observe a supernova, the SN 185 * 964 Abd al Rahman al Sufi (Azophi) writes the Book of …   Wikipedia

• Catalog of Stellar Identifications — The Catalog of Stellar Identifications (CSI) is a star catalog which was constructed to facilitate cross referencing between different star catalogs. It contains designations and basic data for, as of 1983, approximately 440,000 stars, and was… …   Wikipedia

• Milky Way Galaxy — Large spiral galaxy (roughly 150,000 light years in diameter) that contains Earth s solar system. It includes the multitude of stars whose light is seen as the Milky Way, the irregular luminous band that encircles the sky defining the plane of… …   Universalium

• Alpha Centauri — This article is about α Centauri . For a Centauri , see V761 Centauri. For A Centauri , see A Centauri. For other uses, see Alpha Centauri (disambiguation). Alpha Centauri A[1]/B[2] …   Wikipedia

• star — starless, adj. /stahr/, n., adj., v., starred, starring. n. 1. any of the heavenly bodies, except the moon, appearing as fixed luminous points in the sky at night. 2. Astron. any of the large, self luminous, heavenly bodies, as the sun, Polaris,… …   Universalium

• Proper motion — The proper motion of a star is its angular change in position over time as seen from the center of mass of the solar system.[1] It is measured in seconds of arc per year, arcsec/yr, where 3600 arcseconds equal one degree.[2] This contrasts with… …   Wikipedia

• astronomical map — Introduction       any cartographic representation of the stars, galaxies, or surfaces of the planets and the Moon. Modern maps of this kind are based on a coordinate system analagous to geographic latitude and longitude. In most cases, modern… …   Universalium