Quite so.noseall said:Maybe it has summat to do with the fact that we are surrounded by very reflective water.
Earth does reflect quite well, though maybe not as well as Venus. It's as much to do with clouds as water. Next time there's a crescent moon, see if you can spot the rest of it faintly lit up. That's light from a 'full Earth' (well almost full) reflecting back to us.
My original post read 'two thirds covered in ocean' then i edited to read surrounded so that would deal with the moisture in the atmos' too.