Talk:The Pillowcase/@comment-26030957-20150221194907/@comment-24791560-20150329035110

unless the earth is in a gravitational lock with the sun it can continue to have days, though they would be the length of solar cycles. Think of it like this, the earth orbits the sun, it also spins, if it didn't spin and remained facing one direction as it rotated the sun, all parts of the earth would at some point be covered by light. So each year the original face of the sphere would be in sunlight. Of course in a gravitational lock (which is more likely) only one face would be locked against the sun, this is actually what the moon is to the earth. This would cause only a small midsection to be habitable.