Mercury is a little-known, still mysterious world. But one thing is certain. Mercury, the closest planet to the sun, can't actually travel backward in retrograde, and doesn't impact us on Earth. The ...

The planet’s apparent backward motion occurs for a few weeks about every four months. Here’s what’s really happening—and how astrology became a modern phenomenon. Mercury is seen in an image taken by ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. From July 17 to Aug. 10, Mercury will appear to move ...