Arizona has some of the prettiest sunsets, but why? There's a science behind it. Here's what to know, including sunset times ...

As soon as it gets dark, two bright lights become visible—the brightest in the southwest and an almost-as-bright light in the east. What are they?

Much closer to the horizon and a distinct reddish color ... it’s no longer the Sun’s nearest neighbor). You also have to see it during the short period between sunset and Mercury-set.