Recent content by wedouglas

Thanks. I'm talking about the brightness of a celestial body, like how bright the planet would look from orbit compared to how Earth looks from orbit. Earth from orbit is a gradient of light to dark, or rather day to night, assuming you're looking at it from that angle. I'm curious to know how...

Quick question that maybe someone here could answer. I could probably dig up a bunch of math equations and answer it too, but I'm guessing someone here already has a good idea about the answer. Placing the Sun at the center of a sphere whose radius is equal to the distance of the Sun to...