If you’re trying to cheat death on Mercury, this is very promising, but the news gets even better. Mercury's Solar Day is ...

Mercury has the shortest and fastest orbit around the Sun and experiences dramatic temperature changes as it rotates. It is a world of extremes. Explore facts about our solar system's fastest planet.

On Friday, seven planets – Saturn, Mercury, Neptune ... according to the National Weather Service, with a low temperature of 30 degrees. The alignment is most visible just after dusk, according ...