The Blue Moon

A blue moon is a rare phenomenon, when there are too many Full Moons



The moon up close: Rima hadley

This is an English translation of my article published in the belgian magazine Heelal, and the magazine of the  belgian Public observatory Armand Pien


Lunar X and Lunar V

Lunar X and Lunar V are the best know clair-obscur phenomena on the Moon. They are visible only a couple of hours around first quarter moon.

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