APOD 2.6

An Unusual Vein of Deposited Rock on Mars 
2011 December 12 

In the Endeavour Crater located on Mars there is a vein of minerals that the Mars Explorer Rover Mission, Opportunity, found. Veins are distinct, sheetlike bodies of minerals that are formed from the process of precipitation. This bit of information lends itself to the ideas of water being on Mars, life existing on Mars (at some point), and even Mars being capable of supporting life. The mineral line is about a thick "as a human thumb" and is composed mainly of calcium and sulfur. Personally, I find the idea of life and water on Mars both entertaining and intriguing; it shows how humanity scales in comparison to the universe and lends itself to our endless pursuit of knowledge.

*Water on Mars*