NASA chief scientist , Ellen Stofan , wants humans on Mars by mid-2030s . Comment: `` You know , we 're really spending that money here on Earth , '' said Stofan . Studying Mars would help us better understand Earth . Believes there must be intelligent life in our universe .
NASA chief scientist , Ellen Stofan , wants humans on Mars by mid-2030s . Comment: Studying Mars would help us better understand Earth . Believes there must be intelligent life in our universe .