Twin craters, Sabine and Ritter

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Twin craters, Sabine and Ritter

Twin craters

As used herein, the word 'twin' 'means that a pair of next craters are similar in size and appearance. Not necessarily imply that they were formed at the same time. Some twins are very pronounced and do not require large telescopes. A typical example: Cardanus / Krafft in western Oceanus Procellarum.

Most lunar twin craters are too small to notice by ordinary telescopes. There is also the triplets craters, as well organized trio in Endymion floor.

In the picture attached Ritter and Sabine one of the best-known peers and more easily visible for small instruments.

Sabine and Ritter were originally believed to be calderas rather than impacto.Eles craters are identical twins in morphology and size (29-30 km), do not have the ejecta and secondary craters nor, despite its apparent youth. They are positioned in a presumably active area daborda of a sea. Are aligned along a fault, the Hypatia Rilles and the most significant, does not have deep floors recognized since the days of Gilbert as diagnosing impacts. However, after the landing of Apollo, it was noted that "all the craters within basins suffer enhanced isostatic high" because "the thin crust and the heat inside the basin decreases the viscosity of the substrate of the craters, allowing them isostasy achieve in their environment more quickly than can other craters.

By the way this region has another striking feature was the landing site of Apollo 11 and the exact site you can see highlighted by the yellow circle near there is the trio of craters in honor of the famous pioneers of lunar exploration.

Source: Guide Note Lunar - Rosely Gregio - REA Brazil

Adaptation and text: Avani Soares

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