Though, it's supposed to be a photo contest, there is a lot going on over here in the latest contest by @themarkymark.
Anyway, here is the entry.
The picture taken from Space (I meant my space on the laptop) of the edge of the world:
I see that you did not follow. Obviously, it is Einstein level stuff, so not easy to grasp. Here, take a look at the video below to get a sense (for mere mortals):
Ah, I see that you followed!! So, that's it. Hope you enjoyed.