every day for inspiration, and she was a truly unparalleled talent. So I thank her for all of that inspiration." went right to the source: astronaut Christina Hammock Koch, an accomplished scientist, graduate of the 2013 Astronaut Class, and an all-around badass. We talked with Christina about the ins and outs of training for space, what it's like to work for NASA, whether gender makes a difference on board the space station, and what she's most looking forward to about life outside of planet Earth. **What's been your biggest oh-my-gosh-this-is-really-happening moment?Sasha:** Playing withVampire WeekendandHaimat Stubbs during SXSW. **What's it like to perform and write music with your sibling?