Radiation of 50-60 degrees at all time? Then we shouldn't see differences in the colors of the sunset, nor of the sky. However, we do get more intense sunset some days, and least intense others.
I don't see why not.
Well you shouldn't see any differences, because in FET, it says that the earth is always at the same distance from the sun. While in RET, the distance changes.
And besides, as i have mentioned, very steep rays cause intense red sky, not 50/60 degrees ones..