Main Question or Discussion Point
Please could someone explain why earth looks to bright when it is so far away? Also, why can't we see any other objects (other planets and stars) in the image?
Yes, that's right. So the moon covers about 0.25 square degrees, which we would write as 0.25 degrees^2. Of course the moon is round, not square, but we're just making a rough estimate. The whole sky has an area of 4*π square radians, which is 4*π*(180/π)^2 = 41,253 square degrees.0.25^2 degrees(or is it 0.25 degrees^2)? Can you tell me about this unit in this context please. Is this used from a point of view like: the moon has a diameter of 0.5 degrees from a viewer on earth?