Q:  It was today in 1846 this planet was discovered. Astronomers observed the planet for the first time, confirming a planet which had been predicted through mathematical calculations. Which planet is it?  

A: Neptune: Known as a gas giant, it has no solid surface to stand on, features crushing atmospheric pressures, and packs extreme winds and freezing temperatures. Named after the Roman god of the sea.  2.8 billion miles from the sun. A striking bright blue from methane. One day lasts 16 hours. Has 16 known moons (the largest being Triton).