Earth, between sweltering Venus and frozen Mars, formed and orbits within a band where water could persist in solid, liquid, and gaseous phases. Mars had surface water, but not as much as Earth, and ...

Jupiter is now well up in the east in the early evening, so we're now able to see the two brightest planets (Venus and ...

With four gold medals and one silver, Venus Williams is the most decorated tennis player in Olympic history ahead of her nearest rival, younger sister Serena (four golds). The two siblings' careers ...