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Fire is actually a potential biosignature, since it means something is filling the atmosphere with an unstable gas like oxygen. If we find a planet covered in flames, it might be an indicator that it supports life. Or used to, anyway, before the fire.

"Earth-Like Exoplanet", by Randall Munroe, licensed under Creative Commons Attribution-NonCommercial 2.5 License

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Fire is actually a potential biosignature, since it means something is filling the atmosphere with an unstable gas like oxygen. If we find a planet covered in flames, it might be an indicator that it supports life. Or used to, anyway, before the fire.


Page last modified: 9/13/2019.