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djc854 favorited 2 weeks ago

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BLACK ROBE chs23

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djc854 favorited 3 months ago

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Retrograde Motion and the Opposition of Mars

Superior planets (planets that are further from the Sun than Earth) can undergo retrograde motion when they are near opposition (the point in the s...

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  Top Ten Gay Movies 2011

  The all new, freshly updated list of my favorite gay cinema. Which films are your favorite? Have any gay movie recommendations? I'm all ears! Also,...

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djc854 favorited 4 months ago

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Ptolemaic Planetary model

This model originated over 2000 years ago to account for the various 'wanderers' in the sky. These wanderers were of course the planets - our solar...

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