The first space travel by an Indian citizen after Rakesh Sharma’s pioneering journey in 1984 is likely to take place as early as next year. The US will help train and send an Indian astronaut to the International Space Station by the end of 2024, Nasa administrator Bill Nelson announced here on Tuesday. “The selection of the astronaut will be done by Isro, Nasa won’t be a part of it. Details of the mission are being worked out by Isro,” said Nelson, who is on a multi-city visit to India to enhance Indo-US space cooperation.