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http://www.astrosociety.org/edu/publications/tnl/56/M45.html.
http://www.astrosociety.org/edu/publications/tnl/56/M45.html.
1. ASP: Star Science in the Autumn Sky
In autumn 1994, two groups of astronomers announced that they had discovered Cepheid variable stars in a distant cluster of galaxies. ... As the term suggests, variable stars change in brightness over time. ... Variable stars are an ideal way to get high-school students doing real science, with real data, from the real sky. ... a sky chart to find the stars . ... Students can use the nearby stars to estimate the magnitude of Delta. ... Locate the star Delta in Cepheus and estimate its brightness . ...
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Ссылки http://www.astrosociety.org/edu/publications/tnl/32/starscience3.html -- 13.5 Кб -- 02.10.2012
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