For the truthful truth seeker, who honestly cannot conclude the earth is a spinning convex ball, nor a flat disk, the spherical concave earth is the only logical solution.
Faked moon landings does not mean earth is flat, especially when there are so many visual perspective issues with it. The sun and moon would never get anywhere near the horizon if they were circling 3,000 miles above a disk, the southern stars can never be physically justified either.
If you fell prey to the flat earth psychological operation movement, there is still time to retract. The truth about the shape of the earth, which will be revealed ubiquitously shortly, has always been in the minority position. This was by divine design to test the heart of mankind. This concave earth truth is for those who are not pressured by peers, or easily swayed into believing another lie on top of an initial lie.
Everything in nature is cellular, with the life of the cell taking place inside of it. Of course this would be true for the biggest cell of all, the cellular housing of the earth in which you all live.
Things will become perspicuously clear very shortly, as the veil cast upon all humanity will be lifted.