Empirical Earth · Space, Satellites & the Edges of the Map
The claim
“Rockets can’t work in a vacuum and space is fake; the deep-space data is studio-made.”
What is measured
The Deep Space Network needs three antennas ~120° apart (California, Spain, Australia) to keep probes in view as the globe turns, while a flat Earth would need one.
What would show this is wrong
a deep-space probe staying in continuous view from one ground station, needing no 120°-spaced antennas.
Sources
This is one card from Empirical Earth, a free reference that states each flat-Earth claim at its strongest and then answers it with sourced measurements. Nothing is for sale and there are no advertisements.