The #Ignorosphere is a subject regularly on my mind.
Alongside CO2 lasers for killing squirrels and nuclear thermal propulsion.
Also, why is #Venus like that? And why haven't we sent more missions to monitor the #Sun's poles, or even a set of permanent #STEREO-like missions to perfect heliosiesmology for application on other stars?
Also, a bunch of other stuff now that I dwell on it.