This week's science news was dominated by coverage of a cluster of hantavirus infections aboard the Dutch-flagged cruise ship MV Hondius . The cases first received public attention at the end of last week, but the identification of the hantavirus type as the Andes virus — the only hantavirus type known to pass between people — has led to a flurry of reporting as global health organizations race to trace the contacts of those who disembarked. Cruise passengers in at least five U.S. states are being closely monitored by health authorities as the ship heads toward the Spanish island of Tenerife. We covered the latest developments in our live blog of the incident . Shortcut to Mars 'I was not looking for this': Scientist accidentally finds shortcut to Mars New research suggests that there could be a "shortcut" to Mars.…