Spacewalk astronauts work on coolant pumps “Leaky” and “Frosty”

Two astronauts worked outside the International Space Station for six and a half hours Wednesday to reposition two spare solar array ammonia coolant pump assemblies, putting a failed unit, dubbed “Leaky,” into long-term storage and attaching another, known as “Frosty,” to an appendage of the lab’s robot arm. Later this week, arm operators at the […]