(Then I catch myself on and realise it wouldn't even theoretically be worth wasting all that effort and money on someone so determined to be willfully ignorant. We live in a world where schoolkids can send a camera high enough to see the curvature of the Earth, yet we are to believe people who have made the denial of this a core of their identity do not see fit to replicate the experiment?)
I _know_ the earth is flat, so I already know that GoPro are in on the conspiracy as well.</Devil's advocate>
Your "throw them on a rocket" idea is the only realistic way to convince them I would imagine. Which gives me an idea, maybe that could be my ticket to the moon
I mean, if actual pictures of the landing site from LRO don't convince them: https://airandspace.si.edu/multimedia-gallery/628457main1apo... then a few extra photons returning to the earth won't change their mind. (My personal favorite, in an aesthetic sense, is: https://www.nasa.gov/mission_pages/LRO/news/apollo-15.html)