We interview Ralf Jaumann of German Aerospace or DLR. He talks to us about why we're looking for extraterrestrial life, including life that is similar to that on earth. We also ask if it's possible to find very different life forms, and what it would mean if we actually found life one day.
For more from Tomorrow Today go to http://www.dw.de/program/tomorrow-today/s-3062-9798
