Ice on Comet 67P/Churyumov-Gerasimenko by europeanspaceagency (via http://flic.kr/p/ubovxx )
Ice on Comet 67P/Churyumov-Gerasimenko by europeanspaceagency (via http://flic.kr/p/ubovxx )
Ice on Comet 67P/Churyumov-Gerasimenko by europeanspaceagency (via http://flic.kr/p/ubovxx )