跳转到内容

File:Einstein and Einstein A.jpg

页面内容不支持其他语言。
这个文件来自维基共享资源
维基百科,自由的百科全书

Einstein_and_Einstein_A.jpg (423 × 486像素,文件大小:332 KB,MIME类型:image/jpeg


摘要

描述
English: Located on the western limb of the Moon, Einstein and Einstein A craters (16.3oN, 271.3oE ) are only visible to Earth-based observers during certain lunar lighting and orientation conditions. Einstein A is younger than Einstein, as indicated by the fact that it lies squarely in the middle of the floor of Einstein. When viewed in topographic data, these two craters reveal much about the relative age and shape of an impact crater. To understand further, let's first take a look at Einstein. Einstein is a fairly large crater that spans 198 km across. A crater's size alone however cannot reveal much about age. Einstein's relative age can be determined by examining the frequency and distribution of impact craters overprinted on its rim and floor. Younger craters have had fewer impacts, which enables them to retain their original morphology. Einstein A reveals most of its original structure, including a raised rim and ejecta blanket, and is therefore a relatively young crater as compared to Einstein, whose original structure has been somewhat degraded over time by smaller impacts. The Einstein craters were named after famed physicist, philosopher, and scientist Albert Einstein (1879-1955).
日期
来源 https://flic.kr/p/823ZS4
作者 NASA/Goddard Space Flight Center

许可协议

Public domain 本文件完全由NASA创作,在美国属于公有领域。根据NASA的版权方针,NASA的材料除非另有声明否则不受版权保护。(参见Template:PD-USGov/zhNASA版权方针页面JPL图片使用方针。)
警告:
本图原来发表于Flickr,作者为NASA Goddard Photo and Video,网址为https://flickr.com/photos/24662369@N07/4606398747;经FlickreviewR于2017-08-03 20:45:27审查后,确认本图以cc-by-2.0释出,相容于维基共享资源。然而上述的授权条款与来源处不同,因而无法确定本页所提供的授权条款是否有效。

说明

添加一行文字以描述该文件所表现的内容

此文件中描述的项目

描绘内容

image/jpeg

79bcb8fa61fc14bb4eb30e04d26896490a14d354

340,355 字节

486 像素

423 像素

文件历史

点击某个日期/时间查看对应时刻的文件。

日期/时间缩⁠略⁠图大小用户备注
当前2014年8月5日 (二) 20:012014年8月5日 (二) 20:01版本的缩略图423 × 486(332 KB)Numéro 1963User created page with UploadWizard

以下页面使用本文件:

全域文件用途

以下其他wiki使用此文件:

元数据