They're not sure it's ice yet, and it seems like it's more likely to be something else: the Dawn science team has not found evidence that is consistent wit

They're not sure it's ice yet, and it seems like it's more likely to be something else: the Dawn science team has not found evidence that is consistent with ice. The spots' albedo -­ a measure of the amount of light reflected -­ is also lower than predictions for concentrations of ice at the surface. caveat: this is from a separate article, but I think they are referring to the bright spots in general: http://www.jpl.nasa.gov/news/news.php?feature=4677 http://www.jpl.nasa.gov/news/news.php?feature=4677