A few of questions that have not been explained in the forum or wiki.

1. If the sun is a focal point, how do you explain the existence of solar flares?

2. What shape is the focal point?

3. Because there is no sign of the light source in the sky, the source must come from below the horizon. That would indicate that the focal point must be a mirror. How is it possible for the focal point to move without changing the angle of the mirror?

The only way this would be possible is if the focal point is stationary and it is the earth that moves.

Thank you.