2025年关于系外行星K2-18b和火星岩石样本Cheyava Falls的两项地外生命发现宣布引发广泛关注1。英国杜伦大学C-SCOPE研究小组在这两项宣布后数天内对数百名天体生物学家进行了调查，结果显示科学界对这些发现的接受度远低于预期1。
对于K2-18b上发现的生物分子，仅6.6%的受访天体生物学家认为其可能代表地外生命，63%表示不同意，28%保持中立1。其中35.1%的专家对此强烈反对1。关于火星岩石中的矿物图案，支持度略高但仍有限——15.1%的受访者认为这可能是地外生命的证据，44.6%持反对意见，40.3%未作判断1。在火星样本案例中，仅11.1%的专家表示强烈反对1。
Two major announcements about potential extraterrestrial life in 2025—involving biomolecules on the exoplanet K2-18b and mineral patterns in the Martian rock sample Cheyava Falls—have prompted widespread scrutiny from the scientific community.1 Researchers at Durham University's C-SCOPE team surveyed hundreds of astrobiologists in the days following these claims and found that the expert consensus leans decidedly toward caution.1
The survey results reveal significant doubt about both discoveries. Only 6.6% of respondents agreed that the biological molecules detected on K2-18b likely represent extraterrestrial life, with 63% disagreeing and 28% remaining neutral.1 The Mars rock sample fared somewhat better but still faced considerable skepticism, with 15.1% of experts supporting the life hypothesis, 44.6% opposing it, and 40.3% uncertain.1 Notably, opposition to the K2-18b findings proved more pronounced, with 35.1% of astrobiologists strongly disagreeing with the life interpretation, compared to just 11.1% who strongly opposed the Martian claim.1
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