@article{oai:kanazawa-u.repo.nii.ac.jp:00011155,
 author = {諸田, 智克 and 古本, 宗充 and Morota, Tomokatsu and Furumoto, Muneyoshi},
 issue = {1-2},
 journal = {The science reports of the Kanazawa University = 金沢大学理科報告},
 month = {Jan},
 note = {AA00835991, A fresh crater on the Moon is associated with bright rays, which are made of fresh ejecta from the main and secondary craters. Rays of a lunar crater generally become indistinguishable from the background materials with the age, and the lifetime of a ray is supposed to be about 0.8 Gyr. Using Clementine 750-nm mosaic images, we identify rayed craters mainly on the far side of the Moon. A total of 235 rayed craters which are larger than 5 km in diameter are identified in an area of about 1.55 x 10^7 km^2. The size-frequency distribution for the rayed craters indicates a lack of small rayed craters, implying that the preservation of ray depends on the crater size., Department of Earth Sciences, Faculty of Science, Kanazawa University, Department of Earth Sciences, Faculty of Science, Kanazawa University},
 pages = {49--58},
 title = {Rayed craters on the far side of the Moon},
 volume = {47},
 year = {2003}
}