4 astronauts to depart ISS, leaving behind just 3 crewmates to staff the orbiting lab

By Jackie Wattles, CNN (CNN) — Four astronauts are about to make an abrupt exit from the International Space Station amid a health concern — and their unprecedented early departure will leave behind a bare-bones staff to look after the outpost. When the crew boards the SpaceX capsule that will bring them home, only three