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Raditladi Basin
Raditladi Basin is a large peak ring impact crater on Mercury with a diameter of 263 km.〔 Inside its peak ring there is a system of concentric extensional troughs (graben), which are rare surface features on Mercury. The floor of Raditladi is partially covered by relatively light smooth plains, which are thought to be a product of the effusive volcanism. The troughs may also have resulted from volcanic processes under the floor of Raditladi. The basin is relatively young—probably younger than one billion years, with only a few small impact craters on its floor and with well-preserved basin walls and peak-ring structure.〔
==Background==
During its first flyby of Mercury in January 2008 MESSENGER spacecraft discovered a large impact crater approximately 2000 km west of the Caloris basin on the part of Mercury's surface previously not seen by spacecraft.〔 This crater (or basin) was subsequently (on 8 April 2008) named ''Raditladi'' after Leetile Disang Raditladi (1910–1971)—Botswanan playwright and poet.〔 Raditladi is one of the youngest features on Mercury.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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