Skepticism greets claims of a possible biosignature on a distant world

Scientists found a potential sign of life on a distant planet – an astronomer explains why many are still skeptical

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Skepticism greets claims of a possible biosignature on a distant world

It’s really difficult to get a clear sign of life on an exoplanet.

Why Astronomers Doubt Claims That Planet K2-18 b Finding Means Alien Life

NASA’s James Webb Space Telescope detected an intriguing compound in the atmosphere of the exoplanet K2-18 b, but scientists are divided about what the chemical means

Scientists detect signature of life on a distant planet, study suggests

Astronomers have made a detection suggesting biosignatures, or signs of biological activity, on an exoplanet located 124 light-years away. But experts are skeptical.

Alien planet’s atmosphere bears chemical hints of life, astronomers claim

A study suggests a distant world has gases linked on Earth to algae, but others urge caution before invoking alien slime

Signs of life on a distant planet? Not so fast, say these astronomers

Bold claims of ‘biosignature’ molecules trigger an outpouring of scepticism. Bold claims of ‘biosignature’ molecules trigger an outpouring of scepticism.