Tutorial on Earth/Sun Relations and Seasons
To understand why we have seasons, we need to look at the relations ... The sun's rays are pretty close to parallel to each other when they reach the Earth, ...
http://daphne.palomar.edu/jthorngren/tutorial.htm
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AAVSO: American Association of Variable Star Observers
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Astronomy Picture of the Day
A different astronomy and space science related image is featured each day, along with a brief explanation. ... The Moon's silhouette surrounded by a ...
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PlanetQuest: Exoplanet Exploration
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Astronomy Cast
... paste the following into your podcatching software: astronomycast.com/podcast.xml ... please email it in to info@astronomycast.com and we'll try to tackle it ...
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Astronomy Picture of the Day Archive
Daily updates, archives since June 1995. Descriptions and bookmarks by an astronomer.
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StarDate Online - Your Guide to the Universe
Non-technical, current, astronomy information, news, and photographs. Night sky maps and viewing tips. Daily StarDate radio scripts (English and Spanish)
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http://www.calsky.com/
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SOLARCYCLE 24.com / Solar Cycle 24 / Spaceweather / Amateur Radio VHF Aurora Website.
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Pale Blue Dot « a simple prop
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USNO Astronomical Applications Department
... portal is currently online at http://www.usno.navy.mil and is being populated. ... About AA. Information about the department and its history ...
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