Human mission to Mars propellant from the Martian Atmosphere. This proposal drew on concepts developed by the former "Case for Mars" conference series. Over the next decade, Zubrin developed it into a mission concept, Mars Direct, which he presented in a book, "The Case for Mars" (1996). The mission is advocated by the Mars Society, which Zubrin founded in 1998, as practical and affordable. In 1991 in Toulouse, France, the International Space University studied an international human Mars mission. They proposed a crew of 8 traveling to Mars in a nuclear-powered vessel with artificial gravity provided by rotation. On the surface, 40 tonne habitats
Dora the Explorer: Journey to the Purple Planet space door with the keys they found, Dora, Boots, and the aliens finally get to the Purple Planet. Dora and Boots receive a present from the aliens to fly back to Earth, as they bid farewell. The player controls Dora the Explorer, followed by Boots. As the game is played, players collect gems so Isa’s rocket ship can fly to where gems are hidden in treasure. Later in the game, gems are also hidden in logs. If players collect 10 or more gems, Isa’s rocket ship will fly. Players also jump on mushrooms and springboards to jump higher. Before players