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BIRT
The eastern part of Mare Nubium with many mare ridges. Not far from the crater Birt is Rupes Recta (the "Straight Wall"), the most remarkable fault on the Moon. When illuminated from the east it casts a wide shadow that is clearly visible through even a small telescope; in the setting Sun it resembles a fine white line. Larger telescopes reveal a rille, Rima Birt, between the craters Birt E (4.9 x 2.9 km/600 m) and Birt F (3.1 km/470 m). |
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Age of Moon: d. 8 Section 54 RELEVANT FEATURES
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