Naoko Yamazaki is a former Japanese astronaut at JAXA, the second Japanese woman to qualify for the program. The first was Chiaki Mukai.
STS-131 was an ISS assembly flight with the primary payload being a loaded Multi-Purpose Logistics Module - Leonardo. The mission began on April 5th 2010 at 1021:22 UTC launching Commander Alan Poindexter, Pilot James Dutton, Mission Specialist 1 Richard Mastracchio, Mission Specialist 2 Dorothy M. Metcalf-Lindenburger, Mission Specialist 3 Stephanie Wilson, Mission Specialist 4 Naoko Yamazaki & Mission Specialist 5 Clayton Anderson to orbit. They docked with the ISS 2 days after launch. The mission was the final Space Shuttle launch with a seven person crew and was the longest flight for Discovery. STS-131 also marked the first time 4 women have been in space at once. During the mission 3 spacewalks were conducted to replace an ammonia tank and to retrieve a seed experiment from outside the Japanese laboratory. The mission concluded after 15 days & 2 hours on April 20th 2010 at 1308:35 UTC after 2 waved off landing opportunities on the 19th at the Kennedy Space Center.Low Earth Orbit
The Japan Aerospace Exploration Agency (JAXA) is Japan's national aero-space agency. Through the merger of three previously independent organizations, JAXA was formed on 1 October 2003. JAXA is responsible for research, technology development and the launch of satellites into orbit, and is involved in many more advanced missions, such as asteroid exploration and possible manned exploration of the Moon. JAXA launch their Epsilon vehicle from the Uchinoura Space Center and their H-II vehicles from the Tanegashima Space Center.