@mikemcdonald83@mastodon.social I have no real understanding of the history that led to what we have access to today, bur 100% agree. Interferometry is the real mindfuck to me: I get how it works, but the tolerances on orbital parameters + onboard clock timing to get comparable data over multiple passes must be absolutely insane. How many orders of the earth's gravitational field terms do you need to know for it to be possible?