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Chargement... 365 Starry Nights : An Introduction to Astronomy for Every Night of The Year (original 1982; édition 1982)par Chet Raymo
Information sur l'oeuvre365 Starry Nights par Chet Raymo (1982)
   Actuellement, il n'y a pas de discussions au sujet de ce livre.   ) bibefile | Mar 15, 2010 |  365 Starry Nights by Chet Raymo, 1982, Simon &Schuster, New York, is chockablock with drawings “meant to be suggestive only” but, as it turns out, that is enough to sharpen interest in the subject. The book was written for “a hypothetical observer at a latitude of about 40 degrees North”, for both visual and telescopic perusal. For January 11, a drawing of Horsehead Nebula, small compared to its matrix cloud, bears the startling description “A billion solar systems would fit neatly inside.” Cross-references abound: from the Trapezium in Orion on the January 14th entry we see its young stars still surrounded by its nebula and we are advised to “see Mar 19-20” which includes H-R diagrams that show stellar evolution from contracting gas cloud to Main Sequence star to Red Giant to Nova to Dwarf star. For comparison I look to Sky Atlas 2000.0, and on chart eleven I can see Orion and am vaguely disappointed that large entities like the Horsehead Nebula and the three stars of Orion’s belt are rudely crammed together and seem small and mean; but where does that put the aforementioned “billion solar systems”? RASC-KC | Jun 20, 2007 | aucune critique | ajouter une critique
365 Starry Nights is a unique and fascinating introduction to astronomy designed to give you a complete, clear picture of the sky every night of the year. Divided into 365 concise, illustrated essays, it focuses on the aesthetic as well as the scientific aspects of stargazing. It offers the most up-to-date information available, with hundreds of charts, drawings, and maps-that take you beyond the visible canopy of stars and constellations into the unseen realm of nebulae and galaxies. This simple yet substantial text is full of critical information and helpful hints on how to observe the stars; describe their position; calculate their age, brightness, and distance; and much more. Whether you observe the sky with a telescope or the naked eye, 365 Starry Nights makes the infinite intimate and brings the heavens within your grasp. Keep this invaluable, informative guide close at hand, and you'll find that the sky is the limit 365 nights a year. Aucune description trouvée dans une bibliothèque |
Discussion en coursAucunCouvertures populaires
 Google Books — Chargement...GenresClassification décimale de Melvil (CDD)523Natural sciences and mathematics Astronomy Astronomical objects and astrophysicsClassification de la Bibliothèque du CongrèsÉvaluationMoyenne: (4.07)
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