MESSENGER First Images of Comets Encke and ISON
彗星 · NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington/Southwest Research Institute · 2013-11-14 · 公有领域 / CC0 开放图库,可免费下载原图。

彗星 · NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington/Southwest Research Institute · 2013-11-14 · 公有领域 / CC0 开放图库,可免费下载原图。
