It's A Grind To Make Mars Red

The widespread idea that Mars is red due to rocks being rusted by the water that once flooded the red planet may not be correct. Recent laboratory studies show that red dust may be formed by ongoing grinding of surface rocks and liquid water need not have played any significant role in the formation process. The findings open up the debate about the history of water on Mars and whether it has ever been habitable.

Read the whole article on Science Daily

More from Science Daily