On July 31, 2011, Expedition 28 astronaut Ron Garan looked out his window aboard the International Space Station and saw the moon. In fact, he saw it sixteen times. “We had simultaneous sunsets and moonsets,” said Garan. For him and the rest of the station crew, this extraordinary event is a daily occurrence. Since the station orbits Earth every ninety minutes, each day the crew experiences sunrise, sunset, moonrise, and moonset about sixteen times a day.
