Although Mercury was geologically active in its early days, today its surface appears almost completely static. This is why ...

Mercury has always been a bit of an oddball planet. With about half the mass of Mars but roughly the size of the Moon, and a ...

Hold tight, the solar system is going to get bumpy in a few months. Mercury retrograde is on its way. Maybe you've heard people lament over the astrological phenomenon, blaming their woes on the ...