evidence: Earlier this week, Neil deGrasse Tyson trolled flat-Earthers with fake photos of a lunar eclipse so hard. Now another prominent luminary has poignantly debunked the flat Earth conspiracy theory. On Wednesday, Elon Musk destroyed the flat Earth conspiracy with one blistering tweet. [...] The SpaceX and Tesla founder tweeted, "Why is there no Flat Mars Society!?" Pretty simple. You could go even farther and ask, "Why is there no Flat Moon Society!?" As well as asking, "Why is there no Flat Sun Society!?" There is, of course, a Flat Earth Society and they are verified on Twiter and they chimed in with an attempt to explain why there is no Flat Mars Society. Hi Elon, thanks for the question. Unlike the Earth, Mars has been observed to be round.