In an effort to prove the Earth is flat, 61-year-old “Mad” Mike Hughes plans to launch himself thousands of feet in the air in a homemade rocket. But his launch—which was originally set for Saturday—has been postponed, The Washington Post reported Friday afternoon.

Hughes was originally planning to conduct his experiment over Amboy, a ghost town situated along Route 66 in California, that has a population of 4. However, the Bureau of Land Management (BLM) reportedly informed him that he cannot launch his scrap metal rocket on public land.

According to Hughes, the federal agency told him his experiment was a no-go, but Samantha Storms, BLM spokeswoman, said she was unaware of any communication between the self-taught rocket scientist and the agency.