I wrote last year about the effect of CME on the thermospheric density and what are the effects on satellites inside the thermosphere, typically at the altitude of the Starlink satellites. You can find this post here. Solar cycle 25 is well underway now, and from the look of it, it looks like the sun is in a strong unrest. It might be a very active solar cycle, that some predictions made put it at the same level than the cycle 20, which peaked in the 70’s. Little known fact about the 20th solar cycle: one of the strongest storm …