Source (unexplained-mysteries.com)
https://www.oom2.com/t70337-green-glow-detected-on-mars-for-the-first-time#150665
https://www.bbc.com/news/science-environment-53057055
An orbiting spacecraft has picked up a phenomenon that, until now at least, had only been seen on Earth.
When the astronauts look back at our planet from the International Space Station, they will sometimes see a distinctive green glow - the result of oxygen atoms being excited by the light from the Sun.
Now, for the first time, this same glow has been identified on Mars as well.