Atmospheric Emissions

Our atmosphere is unmistakably that of a post-industrial civilization. High levels of carbon monoxide, sulfur dioxide and chlorofluorocarbons are the result of hundreds of years of manufacturing emmissions, as is the depletion of the ozone layer as a consequence of the release into the atmosphere of halocarbons and other manufactured chemicals. Other technological civilizations which exist on the surfaces of exoplanets are likely to have a comparable impact on their atmospheres.

Detectability

  • Air pollution, and specifically the toxic emissions of manufacturing processes, would be an indicator of technological activity, and could be detected by the analysis of a planet's atmosphere as it transits its sun.

Research

31-May-2022
11-Apr-2022
The Astrophysical Journal
21-Mar-2022
The Astrophysical Journal Letters
21-Mar-2022
Acta Astronautica
16-Mar-2022
11-Feb-2022
Planetary Science Journal
15-Jul-2021
4-Mar-2021
2-Mar-2021
9-Feb-2021
The Astrophysical Journal
(31-May-2022)
(11-Apr-2022)
The Astrophysical Journal
(21-Mar-2022)
The Astrophysical Journal Letters
(21-Mar-2022)
Acta Astronautica
(16-Mar-2022)
(11-Feb-2022)
Planetary Science Journal
(15-Jul-2021)
Amedeo Balbi and Milan M. Cirkovic (4-Mar-2021)
Hector Socas-Navarro, Jacob Haqq-Misra, Jason T. Wright et al. (2-Mar-2021)
Ravi Kopparapu, Giada Arney, Jacob Haqq-Misra et al. (9-Feb-2021)
The Astrophysical Journal