Ursa Major, or Great Bear, the constellation in the northern skies that contains the Big Dipper, a name suggested by the shape of the figure formed by its seven brightest stars. In mid-northern latitudes Ursa Major remains above the horizon day and night the year round. It can therefore be seen on any clear night.
Mars, which is the fourth planet from the sun and the third smallest in size, got its name because of its rusty red color. People associated the planet's blood-red color with war, so they named it Mars, after the Roman god of war.
Although other planets have rings, none are as spectacular as Saturn's. What makes the planet's stratified rings, and how did they get there in the first place?