Hmmm, maybe you should try to enlarge your field of vision, a side of earth is large, and the other side is as large. I purposefully gave a vague hint, in order not to give too much information to some people who are trailed, and also to avoid embarrassing them in case they haven't done anything wrong.

At the moment, I'm busy with another research, which may or may not be related. As usual, I can't give too much detail, so please bear with me.