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I came up with following technosignature: Imagine a star system where there is CO2 rich planet closer than the main habitated planet (think earth as main plane
by dvh 3y ago
I came up with following technosignature:
Imagine a star system where there is CO2 rich planet closer than the main habitated planet (think earth as main planet and Venus as CO2 rich inner planet). At some point civilization will try to terraform the CO2 planet by venting CO2 into space, but they don't want to poison their own planet so there will be seasonal gaps in CO2 emissions just when the inner planet crosses in front of main planet.
So to find such civilizations you only need to know 2 orbital periods and monitor CO2 or other gas emissions. Any drop during the conjunction is the technosignature.
- kaushalvivek 3y agoRather than venting, the civilisation would probably convert CO2 to a different compound, on the same planet.
- cyberax 3y agoFirst, you can "vent" CO2 outside of the plane of the ecliptic. Second, you do not "vent" CO2 anyway. Why would you do that? It's stupid and wasteful. You just transform it into diamond and bury it inside the crust.
- igrekel 3y agoNow, if we "vent" some enough to the "side", how much can we tilt the ecliptic?
- igrekel 3y agoWhhhooo that's expending a huge amount of energy just to avoid some chemistry. Maybe not all life needs it, but I'd really like to keep the O2 part.