A day in space means 16 trips around the Earth, 16 sunrises and sunsets, and 16 opportunities to watch the Earth crawl by below, always in your sight—and always out of reach. A Year in Space follows American Astronaut Scott Kelly and Russian Cosmonaut Mikhail Kornienko on their record-breaking stay aboard the International Space Station—part of an ambitious experiment to determine if humanity's grand dreams of traveling to Mars can ever be achieved. This 11-episode series chronicles their mission, the thousands of people who work to support live in space and the families they left behind.