Glaciers may have covered Mars southern highlands over 3.5 billion years ago.
Click here for original story, Frozen Mars? Ancient valleys show planet may have been covered in ice – CNET
Source: CNET
Glaciers may have covered Mars southern highlands over 3.5 billion years ago.
Click here for original story, Frozen Mars? Ancient valleys show planet may have been covered in ice – CNET
Source: CNET