CNN chief scientist , Stofan , wants humans on Earth by 8 months . Astronauts would take 8 months to reach planet , face radiation , thin atmosphere . Studying Mars would help us better understand Mars . Believes there must be intelligent life in our universe .
NASA chief scientist , Ellen Stofan , wants humans on Mars by mid-2030s . Astronauts would take 8 months to reach planet , face radiation , thin atmosphere . Studying Mars would help us better understand Earth . Believes there must be intelligent life in our universe .