A year in space is an extraordinary achievement, but it's still just a step toward our goal of getting to Mars. A trip to Mars and back would last about 30 months (assuming nine months for each leg and about a year in orbit). It's not just that Mars is far away — it's that explorers will have to wait for the orbits of Earth and Mars to line up to make best use of fuel and resources. To them, a year in space might seem like a brief layover. … [Read more...] about Welcome Home Astronaut Kelly and Cosmonaut Kornienko!