Elon Musk has never been one to shy from making bold predictions, which is why we're not surprised to hear that he has high hopes for the future of space travel. In a recent interview with the Wall Street Journal, the SpaceX founder said his company will "probably" put a man in space within the next three years, in the hopes of sending passengers to Mars within the next ten to 20 years. Earlier this month, Musk's company unveiled plans for the "world's most powerful rocket," the
