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Are we alone? It's the perennial question that drives the search for extraterrestrial life in the Solar System.
And there have been some remarkable discoveries that are raising the odds of finding life.
Someone who can tell us a bit more about the possibility of alien life is former NASA researcher and University of Auckland astrobiologist Professor Kathy Campbell. She speaks to Jesse.
Professor Kathy Campbell, Faculty of Science, University of Auckland Photo: Professor Kathy Campbell