In this episode, we consider one of the most interesting and mysterious questions that humans ponder: Is there life on other planets? Andrew Watson, a Royal Society Research Professor at the University of Exeter joins the podcast to discuss his distinct understanding of planetary science… Andrew has a background in physics, marine science, and environmental science. As someone who has always been interested in the evolution of our own planet's life, he naturally began to consider the possibility of life on other planets as well.  Where have Andrew’s curiosities taken him? Tune in to find out… In this episode, we cover: What early Earth may have looked like. The role that comet bombardment played in the formation of the Earth.  When life started on Earth, and the types of organisms that may have thrived. When oxygen photosynthesis was invented, and which organism did it. Want to find out more about Andrew and his fascinating research? Click here now! Episode also available on Apple Podcasts: http://apple.co/30PvU9C