Scientists now doubt life on other planets Detroit Free Press

It’s been less than four years since jubilant scientists proclaimed they had detected fossils of ancient microorganisms from Mars. About the same time, new planets were spotted all over the sky, offering potential homes for alien civilizations. Tiny bugs were discovered in harsh environments on Earth previously considered impossible for creatures to survive in. The prospect of finding new neighbors in outer space seemed bright. But now a wave of pessimism is rising.