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>> shannon: is their life on mars or could there have been? there is a new element. that elements shannon: is there life on mars or could there have been? there is a new element to add to the conversation and that is liquid water and a lot of it. kristin fisher is here with details. >> we are talking a lake of of co'firmed this is the have been waiting for. up specifically to target in their search for microbial alien life. the discovery was made by the italian space agency using one of the oldest spacecraft still operational in orbit around mars, the mars express, they used ice penetrating ma...

>> shannon: is their life on mars or could there have been? there is a new element. that element is liquid water. kristin fisher is here with details. >> we are talking about a lake of liquid water on mars right now. if the findings are confirmed, this is a discovery so many scientists have been waiting for. a specific place to target in their search for microbial alien life. the discovery was made not by nasa but by the italian space agency. using one of the oldest spacecraft still operational in orbit around mars. the mars express. they used ice penetrating radar to balance radio waves off t...

Element is liquid water, a lot of it. correspondent kristin fisher is here with details. >> we are talking about a lake of liquid water on mars right now. if the findings are confirmed, this is the discovery so many scientists have been waiting for, a specific place to target in their search for microbial alien life. the discovery was made not by nasa but the italian space agency using one of the oldest spacecrafts still operational in orbit around mars, the mars express. they used ice penetrating radar to bounce radio waves off the surface of mars and when they got to the planet southwold the...

Used to looking for things in the water. part of what they're doing is utilizing what you described as low tech. but it's a very effective way of determining things that are of smaller size that don't have a temperature difference pro-vial so the sfra red systems don't necessarily work or a radar profile. they're using ray tar, infrared, enhanced optics and human eyeballs, all possible assets, and i think it's wise. >> sometimes human eyeballs are the best technology that we can possibly have. >> absolutely. >> one piece of information we have as well these wooden pallets were spotted in the o...

Been down there. i have. there's a lot of equipment down there. >> alex, the new theory that this plane was flying below 5,000 feet, testing that notion, does it sound like something that's plausible? what would it take to fly it below 5,000 feet? >> it's plausible and doable. it's fairly straight forward to fly at that level. that's not going to mask your radar profile. you'll still be picked up on radar, especially military radar. perhaps lower than that, you'll still be printing a lovely primary radar present. >> let me stay with you, alastair. and if the authorities thought it was below 5,...