Bok
10-23-2012, 09:28 PM
Mars rover finds rocks that show where water once flowed
More... (http://www.sciencenews.org/view/generic/id/345994/title/FOR_KIDS_Curiosity%E2%80%99s_watery_find)
More... (http://www.sciencenews.org/view/generic/id/345994/title/FOR_KIDS_Curiosity%E2%80%99s_watery_find)