#biosignatures

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#mars #exoplanets #astrobiology #perseverance-rover #jezero-crater #james-webb-space-telescope
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Science
fromBig Think
3 months ago

All claims of extraterrestrial life must pass these 7 hurdles

No claimed extraterrestrial life detection has yet excluded abiotic explanations; robust confirmation requires multilayered evidence and independent follow-up to reach Confidence level 4.
fromBig Think
4 months ago

Aerial aliens: Why cloudy worlds might make detecting life easier

I think the first thing to remember is: We are right at the beginning of this adventure. There's so much excitement that every little signal - every "wiggle" in a spectrum - gets people saying, "Oh! That might be life!" And then, on the other side, other people respond with, "I don't see enough wiggles, so there's probably not even an atmosphere. Dead planet. Move on." Both reactions are too fast.
Science
#machine-learning
fromNature
5 months ago
Science

AI finds signs of life in ancient rocks

Machine-learning algorithms trained on geological data can identify traces of ancient biological activity on Earth and other worlds.
fromwww.scientificamerican.com
5 months ago
Science

AI Uncovers Oldest-Ever Molecular Evidence of Photosynthesis

Machine learning distinguishes biological from abiotic organic molecules in 3.3-billion-year-old rocks, extending confident molecular evidence of life and detecting 2.5-billion-year-old photosynthesis.
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#mars
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Science
fromThe Verge
8 months ago

NASA found clues of life on Mars, but budget cuts threaten future missions

Potential biosignatures in a 3.5-billion-year-old Martian rock suggest possible past microbial life while NASA faces budget cuts threatening its scientific programs.
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