As one of the five planets visible to the naked eye, Mars has fascinated humanity since before the advent of writing. The earliest observations merely tracked its path through the night sky, but ...

Either way, Earthlings have been fooled time and again by the rocky Martian surface and their own psychology. People have at various times reported finding everything from canals to spooky ...

Tombaugh believes that the canals are faults or fractures, several miles wide, in the Martian crust. Their darkening and fading may be caused, he says, by the intermittent escape of hot gases that ...