Musk responds to Boeing CEO's comment on reaching Mars first
SpaceX Founder Elon Musk has responded to Boeing CEO Dennis Muilenburg, saying "Do it" after he commented that the aerospace company will beat Musk to reach Mars. "The first person that sets foot on Mars will get there on a Boeing rocket," Muilenburg said on Thursday. In September, Musk unveiled a detailed plan to build a human colony on Mars.