In a recent time-lapse video captured by NASA astronaut Don Pettit, the thrusters of the SpaceX Dragon cargo spacecraft were seen firing as it undocked from the International Space Station (ISS) while flying 259 miles above the Pacific Ocean. On the ISS, most of the Expedition 72 crew had a day off, except for astronauts Don Pettit and Nick Hague, who conducted important human research and biotechnology studies. They explored the impacts of microgravity on health and potential methods for sustaining life in space, like food and oxygen production. Pettit focused on human biology, collecting and processing biological samples for later analysis on the effects of long-term weightlessness, while Hague conducted micro-algae experiments to enhance oxygen and nutrient production. Both astronauts are preparing for two upcoming spacewalks aimed at upgrading station systems and maintaining scientific instruments. Their first spacewalk is scheduled for January 16, where they will replace components and service the NICER X-ray telescope. NASA plans to broadcast both spacewalks on their platform, NASA+, with discussions on the activities to follow. Other crew members enjoyed their day off, celebrating the Eastern Orthodox Christmas holiday.
