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 (Tasmania) Mount Olympus (Tasmania) Mount Olympus is a mountain in the Cradle Mountain-Lake St Clair National Park in Tasmania, Australia. It is the 24th highest mountain in Tasmania at above sea level and is situated about South-East of Mount Gould and about west of Lake St. Clair. In 1835 George Frankland climbed the mountain and named it Mount Olympus. Mount Olympus was painted by the Australian landscape painter, William Charles Piguenit. It was purchased by the Art Gallery of New South Wales in 1875 and was the Gallery's first oil painting acquisition, "the first Australian work purchased by public subscription", and