stellar astronomy

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• 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

• 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 classification — In astronomy, stellar classification is a classification of stars based on their spectral characteristics. The spectral class of a star is a designated class of a star describing the ionization of its chromosphere, what atomic excitations are… …   Wikipedia

• Stellar evolution — Life cycle of a Sun like star Stellar evolution is the process by which a star undergoes a sequence of radical changes during its lifetime. Depending on the mass of the star, this lifetime ranges from only a few million years (for the most… …   Wikipedia

• Astronomy — (from the Greek words astron (ἄστρον), star , and nomos (νόμος), law ) is the scientific study of celestial objects (such as stars, planets, comets, and galaxies) and phenomena that originate outside the Earth s atmosphere (such as the cosmic… …   Wikipedia

• Astronomy — • Divided into two main branches, astrometry and astrophysics; the former concerned with determining the places of the investigation of the heavenly bodies, the latter, with the investigation of their chemical and physical nature Catholic… …   Catholic encyclopedia

• Stellar rotation — is the angular motion of a star about its axis. The rate of rotation can be measured from the spectrum of the star, or by timing the movements of active features on the surface.The rotation of a star produces an equatorial bulge due to… …   Wikipedia

• Astronomy in the Bible — • Includes examples of Old and New Testament references Catholic Encyclopedia. Kevin Knight. 2006. Astronomy in the Bible     Astronomy in the Bible      …   Catholic encyclopedia

• Stellar wobble — is a variation in the position of a star due to the gravitational influence of another body orbiting it. Stellar wobble is visible as a Doppler redshift in the star s spectrum or as a motion of the star in the plane of the sky. The Doppler shift… …   Wikipedia

• stellar classification — ▪ astronomy       scheme for assigning stars (star) to types according to their temperatures as estimated from their spectra. The generally accepted system of stellar classification is a combination of two classification schemes: the Harvard… …   Universalium

• Stellar mass loss — is a phenomenon observed in some massive stars. It occurs when a triggering event causes the ejection of a large portion of the star s mass. Stellar mass loss can also occur when a star gradually loses material to a binary companion or into… …   Wikipedia