Oxygen in Earth’s Higher Atmosphere https://www.mpg.de/19836694/oxygen-in-earth-s-higher-atmosphere
The airborne infrared observatory Sofia for the first time detected the atomic 18O isotope in the mesosphere and lower thermosphere of Earth. Their measurements are an important step in the understanding of how biological processes permeate Earth’s atmosphere and could help to refine the search for potential signs of life in exoplanet atmospheres.
, which is more exposed to disruption from the sun’s UV radiation and the solar wind