frozen nitrogen, with smaller fractions of carbon monoxide and methane ices (the ice probably averages 3-4 km deep), situated in an ancient impact basin
NASA ICE URL: https://www.flickr.com/people/nasa_ice/ publication date: 26 October 2012 described at URL: https://www.flickr.com/photos/nasa_ice/8125406552/
US DHS ICE (Immigration and Customs Enforcement) put on the homepage of the websites it seized in Nov 2010. }} |Source=usaoutlets.net |Author=US Department
string: NASA ICE URL: https://www.flickr.com/people/nasa_ice/ publication date: 26 July 2011 described at URL: https://www.flickr.com/photos/nasa_ice/5977182664/