On the other hand, can you imagine being stranded on a mountain with no cell phones and your hiking buddy is not at your arms distance and you have an emergency? Oh, and what about being under water where you can’t talk and only use hand signals or tools you have to communicate? Now think of the same situation on Mars or Moon, in a pressurized spacesuit and to your bad luck you've lost communications over the radio. That would be a terrible day and a very plausible to occur. We simulated these scenarios and designed hand signaling protocols for EVA communication based on experience from aircraft, diving and mountaineering operations among the crew and standard published protocols. We practiced various scenarios on foot, driving Martian rovers (‘ATV’s in our case) and in conjunction with our little MACHO rover that has the capability to transmit video to the Capsule communicator. We will be using these in the coming week during our rescue operation EVAs along with a specially designed stretcher for emergency evacuation of injured crew members. Technologies for such things might seem to be straightforward, but in reality, it’s very hard to design and implement technologies specifically for human space applications- unless you get into the shoes of being in a spacesuit and realize the operational constraints.
While, during the day we got to peek through the microscope, as the skies darkened we eagerly moved into the observatory to look into the lens of the telescope to conduct our astronomy project. There we saw Jupiter, Mars and Sombrero Galaxy. I am still at awe with nature. Its beauty and perfection never cease to surprise me.