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Stars (Astronomy)
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The Cambridge Encylopedia of Stars, with over 200 illustrations, is a unique book that provides a comprehensive description of stars and their natures. Detailed cross referencing enables the reader to explore topics in depth, making an invaluable work both for beginners and for those with a more advanced interest in stars and stellar evolution. Chapter contents: 1. Stars and Constellations; 2. Location; 3. Magnitudes; 4.
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Stars are born in cold interstellar clouds like the Orion Nebula and the Eagle Nebula. In these stellar nurseries, dense regions undergo gravitational collapse to form a rotating gas globule. As the globule collapses, the temperature and pressure increase and it spins faster. This causes the globule to have a central core and a surrounding flattened disk of dust. The central core becomes a star, while the disk may coalesce into planets and asteroids. The process of collapse takes between 10,000 and 1,000,000 years.
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Newsgroups: sci.astro,sci.answers,news.answers Subject: [sci.astro] Stars (Astronomy Frequently Asked Questions) (7/9) Followup-To: poster From: jlazio@patriot.net Summary: This posting addresses frequently asked questions about stars. Approved: news-answers-request@MIT.EDU Last-modified: $Date: 2003/10/18 00:00:02 $ Version: $Revision: 4.5 $ URL: http://sciastro.astronomy.net/ Posting-frequency: semi-monthly (Wednesday) Archive-name: astronomy/faq/part7 ------------------------------ Subject: Introduction sci.astro is a newsgroup devoted to the discussion of the science of astronomy. As such its content ranges from the Earth to the farthest reaches of the Universe. However, certain questions tend to appear fairly regularly. This document attempts to summarize answers to these questions. This document is posted on the first and third Wednesdays of each month to the newsgroup sci.astro.
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Cosmic Clouds takes the reader on a journey through the spaces between the stars, through the vast clouds of dust and gas that constitute the interstellar medium, to explore the grand Galactic cycle of birth and death. Chapter contents: 1. Among the Stars; 2. Entering the Nebulae; 3. Dark Dust; 4. Opening the Spectrum; 5.
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The four stars in the bowl of the Little Dipper are of 2nd, 3rd, 4th and 5th magnitude, so they form a nice set of measuring standards. Kochab is the brightest of them. The name means "star" in Arabic, being short for "al Kaukab ash-Shamali" meaning "North Star," which it was from 1500 B.C. to A.D. 300.
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Show your students how to use groups of stars as a measuring stick to find other stars. Make sure they always work from a known constellation such as Orion, the Big Dipper, Scorpius, or the Southern Cross. Working from the known constellation, use the constellation itself as a measuring stick to find new constellations.
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