During the 1960s, humans were finally able to explore the universe beyond Earth. But at what cost? Many people lost their lives in a race to go where humans had never gone before. Find out what happened when an explosion on a spacecraft left three U.S. astronauts stranded in space 200, 000 miles (321, 869 kilometers) from Earth. With a limited supply of food, water, and oxygen, would they make it back to Earth alive?