Astronomy Picture of the Day Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2013 October 2 All the Colors of the Sun Credit & Copyright: Nigel Sharp (NSF), FTS, NSO, KPNO, AURA, NSF Explanation: It is still not known why the Sun's light is missing some colors. Here are all..