Japanese Lunar Exploration Program 2007, after being delayed several times. SELENE-2, Japan's first lunar lander and rover, is expected to be launched in the 2020s. The program also includes a lunar sample return mission (SELENE-3), a mission to Mars to collect data for future manned expeditions (MELOS), participation in the Mars international sample return mission, and an advanced lander for future human missions to the Moon. The eventual goal is to participate in an international lunar outpost program, in which Japanese crews would stay on the lunar surface for a prolonged period of time and promote scientific research and environment utilization. SELENE (Selenological and
Japanese Lunar Exploration Program Engineering Explorer), nicknamed Kaguya after a lunar princess in the ancient Japanese folklore "The Tale of the Bamboo Cutter", is the second Japanese mission to the Moon. Launched in September 2007, it was "the largest lunar mission since the Apollo program". The mission featured three separate space craft, the main orbiter (Kaguya), the small relay satellite (Okina), and the VLBI satellite (Ouna). SELENE-2, also known as Kaguya-2, formerly known as SELENE-B, is the follow-on mission to Kaguya. SELENE-2 will consist from one large lander, which will have a small-sized rover, and if possible, will also have some penetrators inherited from