NASA is taking its final steps to launching astronauts from American soil again and the first steps in sending humans into deep space and Mars.The space agency announced that Boeing Co. and SpaceX, both U.S. companies, have landed highly-sought-after. NASA is taking its final steps to launching astronauts from American soil again and the first steps in sending humans into deep space and Mars.The space agency announced that Boeing Co. and SpaceX, both U.S. companies, have landed highly-sought-after. NASA is taking its final steps to launching astronauts from American soil again and the first steps in sending humans into deep space and Mars.The space agency announced that Boeing Co. and SpaceX, both U.S. companies, have landed highly-sought-after. NASA is taking its final steps to launching astronauts from American soil again and the first steps in sending humans into deep space and Mars.The space agency announced that Boeing Co. and SpaceX, both U.S. companies, have landed highly-sought-after. NASA is taking its final steps to launching astronauts from American soil again and the first steps in sending humans into deep space and Mars.The space agency announced that Boeing Co. and SpaceX, both U.S. companies, have landed highly-sought-after. NASA is taking its final steps to launching astronauts from American soil again and the first steps in sending humans into deep space and Mars.The space agency announced that Boeing Co. and SpaceX, both U.S. companies, have landed highly-sought-after.