a potentially habitable environment on mars, a place that could have supported life, but it sort of broadens what we know about that environment, and this is a pretty big lake. it was about 30 be miles long by 3 miles wide and shallow, but they re saying this could have lasted for hundreds of millions of dollars, this calm lake. bill: and they compared it to like the finger lakes in upstate new york, kind of of that shape and teal. right. bill: but but if it was three and a half billion years ago, what is the parallel with what was happening on planet earth then, and why is that important? well, it s pretty interesting, yeah. that s about the time that the first life forms started emerging here on earth, that s what scientists think. we have the first evidence of the first microbes on earth about 3.8 billion years ago, so that rough period is when earth s life first started getting a foothold. it may just be a quince deposition, and it s also we have to secrecy stress, they