Mars and seasonal cycles of Mars are likewise similar to those of Earth, as is the tilt that produces the seasons. Mars is the site of Olympus Mons, the largest volcano and second-highest known mountain in the Solar System, and of Valles Marineris, one of the largest canyons in the Solar System. The smooth Borealis basin in the northern hemisphere covers 40% of the planet and may be a giant impact feature. Mars has two moons, Phobos and Deimos, which are small and irregularly shaped. These may be captured asteroids, similar to 5261 Eureka, a Mars trojan. There are ongoing investigations
Mount Olympus (Utah) Mount Olympus (Utah) Mount Olympus in the U.S. state of Utah is one of the most prominent and recognizable mountains viewable from practically every location in the Salt Lake Valley. Mount Olympus is not the tallest peak along the Wasatch Front, but its unusual form and location make it a popular hiking destination for locals. The mountain is situated immediately east of the center of the Salt Lake Valley (due east from Murray and Taylorsville). Distinctive features of the mountain are its twin peaks and other outcroppings, the highest of which is called "Summit Peak" and which towers above the