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» Space &
Exploration - Stars |
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Comparing stars - LearningSpace - OpenLearn - The Open
University - Stars can necessarily be observed only at a distance.
This unit introduces the Hertzsprung–Russell diagram, an essential
tool in understanding the nature of stars. You should have some
understanding of the basic stellar properties of luminosity and
temperature in order to get the most from the unit
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Star (astronomy) - MSN Encarta - Star astronomy, massive shining
sphere of hot gas. Of all the stars in the universe, our Sun is the
nearest to Earth and the most extensively
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