How did the universe start? Why is the Cosmic Microwave Background the same in any direction? Why do we detect solar neutrinos in the same intensities during nighttime? Why are earthquake waves shielded when they are detected by stations that are on direct opposite sides of what would be a sphere (the Earth's core)? What are seasonal meteor showers?Not a disk, but an infinitely wide"slab" mostly covered with ice and darkness, except for the circular hole melted in it by our local sun. It is possible (but not proven) that there are other suns and other melt-holes. Some of these may contain other forms of life.
This slab is about 6,000km thick and completely bisects the cosmos, and there is probably an identical ice plain on the other side. This is purely hypothetical though, as we do not have the technology to tunnel through the slab to the other side.
A diskist lie! Slabism is the accepted model that best explains the observed facts.
Edit: Why do naval gunners have to correct for the Coriolis force, and why does it switch directions below the equator? Why is it weakest at the equator?