ASTANA, Kazakhstan A Russian capsule safely returned two astronauts and a cosmonaut from the international space station on Sunday, but the landing, 300 miles off target, triggered a nerve-racking two-hour search in the steppes of central Asia. The three men were finally spotted in the vast, brown, barren stretch of Kazakhstan by a recovery plane and waved to show they were fine. Helicopters arrived for them an hour or two later.