Life Detectors

A robotic rover called Zoe is the first robot to remotely detect the presence of life. On a NASA-sponsored mission in the harsh Atacama desert in Chile, Zoe was able to detect life by looking for natural fluorescence from lichens and bacteria. Life detection is all the rage now; the European Space Agency will be using the Urey Life Detector on an upcoming Mars mission (see photo). These devices mimic the function of the long range sensors from Star Trek, which could detect life from unreasonably long distances.