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> even atmosphere composition tweaks visible on exoplanet spectrographs I'm fairly certain we can't detect that yet even if they had.
by empath75 8y ago
> even atmosphere composition tweaks visible on exoplanet spectrographs
I'm fairly certain we can't detect that yet even if they had.
- gwern 8y agoExoplanet atmospheres can be studied by the transit spectroscopy method. This is how water has been detected, for example. Still no oxygen or any other signatures of life. Lots of hostile atmospheres, though: https://en.wikipedia.org/wiki/Extraterrestrial_atmosphere#Exoplanets https://en.wikipedia.org/wiki/Extraterrestrial_atmosphere#Ex...
- empath75 8y agoI don’t think we could see a rocky planet like earth though.