Who else believes we are not alone in the universe ?
Humanity is on the verge of discovering alien life, high-ranking NASA scientists say.
"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 said April 7 during a panel discussion that focused on the space agency's efforts to search for habitable worlds and alien life.
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