Crash Course Astronomy Constellations

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Crash Course Astronomy:Stars: Crash Course Astronomy #26 Season 1 Episode 26

Today Phil's explaining the stars and how they can be categorized using their spectra. Together with their distance, this provides a wealth of information about them including their luminosity, size, and temperature. The HR diagram plots stars's luminosity versus temperature, and most stars fall along the main sequence, where they live most of ...

PBS2016年2月16日

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Crash Course Astronomy:Mars: Crash Course

PBS

2015年12月1日

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Crash Course Astronomy:The Sun: Crash Course

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2015年12月1日

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Crash Course Astronomy:Tides: Crash Course

PBS

2015年12月1日

Astronomy for Beginners

$Telescope for Adults Astronomy Beginners - 70mm Aperture and 400mm Focal Length Professional Refractor Telescope with Remote Great Astronomy for Christmas with Package, Blue$

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Telescope for Adults Astronomy Beginners - 70mm Aperture and

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2022年12月4日

$Telescope, 80mm Aperture 900mm Refractor Telescope for Adults Astronomy & Kids & Beginners, Works with BCTO App Automatic Tracking and Finding Star/Planets - iPhone/Android Compatible$