Mercury will retrograde from Dec. 13 through Jan. 2 in the last of four times it appears to move backward in the sky this year. Every planet has in our solar system has retrograded for at least part ...

If you happened to take a stroll along the surface of the planet Mercury, you’d have to watch out to make sure you didn’t tumble into Dalí, Dickens, or even Disney. Not the famous figures themselves, ...