The issue focused attention last week when Swedish astronaut Samantha Cristoforetti flew across the Atlantic Ocean from Portugal to Greenland aboard an Expedition 46 Soyuz capsule.Last week she flew across from Ghana aboard an Expedition 46 Soyuz capsule."My destination will be Greenland," Ms Cristoforetti tweeted after arriving at Greenland's Kamgangarfjord base."Everything will go smoothly," she wrote later in an Instagram message."Everything went smoothly!"Earlier this week she tweeted about receiving news about her deployment."Got confirmation about flight