Thanks for the interesting comment, but I have to say: Marketing helps science too. If SpaceX achieves all its goals, then perhaps the marketing stunt was worth

Thanks for the interesting comment, but I have to say: Marketing helps science too. If SpaceX achieves all its goals, then perhaps the marketing stunt was worth it? Still, I wonder if Elon knew such a satellite was a possibility. I would assume yes, but I'm not sure. How much work would it take to create a LAGEOS-like satellite? Presumably they're not just lying around. I couldn't find how much the original LAGEOS satellites cost.