Exposed water ice detected on comet's surface. 

67p 혜성의 표면에서 얼음을 검출하다.

유럽우주국(ESA)의 로제타 탐사선에 장착된 고해상도 카메라를 사용하여 과학자들은 67P (추류모프-게라시멘코) 혜성의 표면에서 수 미터 크기의 얼음 덩어리(water ice, 수빙)를 120여개 확인하였다. 삽입된 6개의 사진들은 이 혜성의 표면에 있는 6개의 밝은 패치(반점)를 보여준다. 이들 밝은 반점들을 분석한 결과, 이것들은 얼음 덩어리(water ice)인 것으로 밝혀졌다.

Exposed water ice detected on comet's surface. 

Ice on Comet 67P/Churyumov-Gerasimenko.

Released 24/06/2015 3:00 pm.

Using the high-resolution science camera on board ESA’s Rosetta spacecraft, scientists have identified more than a hundred patches of water ice a few metres in size on the surface of Comet 67P/Churyumov-Gerasimenko.

Examples of six different bright patches identified on the surface of Comet 67P/Churyumov-Gerasimenko in OSIRIS narrow-angle camera images acquired in September 2014. The insets point to the broad regions in which they were discovered (not to specific locations). In total, 120 bright regions, including clusters of bright features, isolated features and individual boulders, were identified in images acquired during September 2014 when the spacecraft was between 20-50 km from the comet centre.

The false colour images are red-green-blue composites assembled from monochrome images taken at different times and have been stretched and slightly saturated to emphasis the contrasts of colour such that dark terrains appear redder and bright regions appear significantly bluer compared with what the human eye would normally see. This imaging technique allows scientists to determine more about the nature of the material; in this case the bluer colour indicates the presence of ice.


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