human
How do you know that is not really the extending edge of the Sun? I asked the doctor.
gpt
Perhaps we are already far enough away to see it all about the Earth like that.
human
If that were really the Sun, the light from his extending edge would illuminate the surface of the Earth towards us. The planet's outline would be irregular and partly glowing, but you see it is quite dull and dark, and the outline is most plainly visible.