article_snippet.sent: (CNN)They may not be "Star Trek"-type extraterrestrials, but we may be close to finding evidence of alien life, a NASA scientist says.
article_snippet.sent: I think we're going to have strong indications of life beyond Earth within a decade, and I think we're going to have definitive evidence within 20 to 30 years,NASA chief scientist Ellen Stofan NASA chief scientist Ellen Stofan said Tuesday during a panel discussion on water in the universe.
article_snippet.sent: We know where to look.
article_snippet.sent: We know how to look," NASA chief scientist Ellen Stofan said.
article_snippet.sent: Still, former astronaut John Grunsfeld said it's an exciting time -- and former astronaut John Grunsfeld thinks it's just a matter of time before we find life outside we solar system as well.
highlights_snippet.sent: NASA chief scientist Ellen Stofan believes NASA're close to finding alien life .
  
highlights_snippet.sent: Indications within a decade; definitive evidence within "20 to 30 years," NASA chief scientist Ellen Stofan said .
  