[aerohead]

Originally Posted by freebeard

They're whom I referenced. CREX-2 was intended for 2019, but was delayed until now.

An earthquake hypothesis led to the satellite that confirmed it.

ntrs.nasa.gov: Validation of Atmosphere/Ionosphere Signals Associated with Major Earthquakes by Multi-Instrument Space-Borne and Ground Observations

Nothing is pure, and few things are simple.

NASA isn't talking about any causal relationship though. What they're saying is that there's a lithosphere -to-ionosphere relationship. Not the other way around.