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202 Why scientists fear we're missing evidence of extraterrestrial life

ScienceDaily
ScienceDaily · 06/29/2026 22:34 EDT

Scientists are raising concerns that we may be overlooking evidence of extraterrestrial life even when it is present. Hidden biosignatures, limitations in detection technology, and assumptions about what life should look like can all create dangerous false negatives. The researchers say future missions should focus not only on finding life, but also on understanding how signs of life could be missed.

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