单词 | tycho |
释义 | TychoTycho(ˈtaɪkəʊ)TychoTycho(tÿ -koh) A very recent lunar crater, possibly only about 100 million years old; it is 100 km in diameter. Rays from the crater traverse much of the nearside of the Moon and are particularly striking at full Moon. The ejecta blanket was sampled by Surveyor 7, the only Surveyor to land in the highlands; some craters in the highland region of Taurus-Littrow may be secondaries of Tycho.Tycho[′tī·kō] |
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