. "Not only does this save time for the crew, stuffed as they are in the cramped Soyuz, but since the Russian capsule can fly autonomously in orbit for only about four days, the shorter commute also means more fuel, oxygen and other supplies can be conserved for a possible emergency.Copyright 2013 NPR. To see more, visit http://www.npr.org/. ?? 2015 Iowa Public Radio" . . .