Eli5 why do we perceive red+blue as purple? Submitted by YYM7 t3_11ee39k on February 28, 2023 at 5:14 PM in explainlikeimfive 9 comments 2
Is it possible for a planet to have two rings with different radius, and not on the same plane? Submitted by YYM7 t3_10wqwrf on February 8, 2023 at 7:53 AM in askscience 14 comments 9