Earlier today, President of Costa Rica Luis Guillermo Solis opened the United Nations Workshop on Human Space Technology, a five-day international workshop on human space technology that will take place in  San José until March 11th.   Keynote speeches were delivered by Dr. Franklin Chang Diaz, CEO of the Ad Astra Rocket Company and Hall of Fame NASA astronaut, and by Charles F. Bolden Jr., NASA Administrator and retired Major General of the United States

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