solar astronomy

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• Timeline of solar astronomy — 9th century * 850 Ahmad ibn Muhammad ibn Kathīr al Farghānī (Alfraganus) gives values for the obliquity of the ecliptic, the precessional movement of the apogees of the Sun 10th century * 900 929 Muhammad ibn Jābir al Harrānī al Battānī… …   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

• Solar variation — Solar variations are changes in the amount of solar radiation emitted by the Sun. There are periodic components to these variations, the principal one being the 11 year solar cycle (or sunspot cycle), as well as aperiodic fluctuations. Solar… …   Wikipedia

• Astronomy Now — is a monthly British magazine on astronomy and is the UK s best selling astronomy magazine, featuring a mix of articles ranging from how to observe the night sky to the latest discoveries in the Solar System and in deep space. The magazine… …   Wikipedia

• Solar system model — Solar system models, especially mechanical models, called orreries , that illustrate the relative positions and motions of the planets and moons in the solar system have been built for centuries. While they often showed relative sizes, these… …   Wikipedia

• Astronomy Ireland — is one of the national astronomy clubs of Ireland (both the Republic of Ireland and Northern Ireland). Astronomy IrelandAstronomy Ireland (AI) was founded in Dublin in 1990 by David Moore who is currently the chairman of the organisation, and… …   Wikipedia

• Solar — means appertaining to the Sun, our planet s star. Solar also has other meanings. Related to energy * Active solar * Passive solar ** Passive solar building design * Solar cell, a device that directly creates electricity from solar energy * Solar… …   Wikipedia

• Solar physics — is the study of our Sun. Solar Physics is also the name of a journal for solar and solar stellar research and the study of solar terrestrial physics. It was founded in 1967 and treats all aspects of solar physics, ranging from the internal… …   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

• Solar physics (journal) — Solar Physics is also the name of a journal for solar and solar stellar research and the study of solar terrestrial physics. It was founded in 1967 and treats all aspects of solar physics, ranging from the internal structure of the Sun and its… …   Wikipedia