月球陨石坑 

月球轨道器1号拍摄的韦布陨石坑,可看到数座环绕它的更小陨坑。

月球陨石坑(也称环形山)是指月球表面的碗状凹坑,其外观特征为坑底相对平坦,周围环绕着一圈隆起的坑壁。按照现代观点,绝大多数月球陨石坑都来自于撞击[1][2],仅有一小部分仍被认为是火山喷发所形成的火山口

  1. ^ Pike RJ. Size-dependence in the shape of fresh impact craters on the moon.. Impact and explosion cratering: Planetary and terrestrial implications; Proceedings of the Symposium on Planetary Cratering Mechanics, Flagstaff, Ariz., September 13-17, 1976. New York: Pergamon Press. 1977: 489–509. 
  2. ^ Quaide, W.L. & Oberbeck, V.R. Thickness determinations of the lunar surface layer from lunar impact craters. Journal of Geophysical Research (American Geophysical Union). 1968, 73 (16): 5247–5270. Bibcode:1968JGR....73.5247Q. doi:10.1029/JB073i016p05247. 



取材自維基百科 - 中文時事百科