Here's everything you need to know about the Mercury retrograde shadow period—and why it doesn't have to mean feeling defeated at every turn. A key thing to know about the planet of ...

Here's everything you need to know about what it is and how the post-retrograde shadow will affect you. Mercury retrograde refers to the period of time where Mercury moves slower than the Earth around ...

on Mercury, dark equals cold. At night, temperatures can plunge to minus 290 F (minus 180 C). The planet's north pole is pockmarked by craters whose bottoms are always in shadow. Research has ...