I watched the movie The Martian, and there is a brief scene where there is lightning on Mars. Something about this seems unlikely to me, but I can't remember if it's actually possible or not. Is there actually lightning on Mars?
1 Answer
Lightning has been observed in Mars. However, this is 'dry' lightning, unrelated to precipitation.
This was described in the paper Emission of non-thermal microwave radiation by a Martian dust storm by Christopher Ruf and others.