Korea\'s first astronaut Yi So-yeon refuted Wednesday a lawmaker\'s claims that taxpayers\' money spent on her has been a waste since she is pursuing a seemingly unrelated degree in business, saying that still her ultimate goal is to help advance Korean space technology. \"It was a decision I made after realizing that I can\'t live the rest of my life talking about what I did in space for 11 days. I chose to pursue an MBA because I want to be someone who connects science with investors,\" Yi told Yonhap News Agency by phone.