Summer dark sky observing means short nights, and it’s usually too hot for comfort in the Colorado desert location we love. But Mojo and I decided [...]
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Summer dark sky observing means short nights, and it’s usually too hot for comfort in the Colorado desert location we love. But Mojo and I decided [...]
Galileo’s drawing of the third quarter moon was made on December 18, 1609 according to widely accepted dates calculated by lunar scientist Ewen Whitaker. He used the solar colongitude and [...] |
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