“When you look at the Earth from the vantage point of space, our planet looks like a little blue marble. Seeing our world from that vantage point cognitively changes you. My orbital shift happened after breaking bread with my space station crewmates and my shuttle crewmates. it showed me how close we are as countries, as races, as a species. I marveled that on Earth we have all these distances and separations and geographic boundaries, but they vanish quickly in the weightless interior of the space station.”