Shuttle Discovery heads for space station

Discovery blasted off from Florida's Kennedy Space Centre - a welcome sight for Nasa officials anxious to get the flight going after a month of delays. A hydrogen leak had prevented Discovery from lifting off last Wednesday and, before that, hydrogen valves kept the shuttle grounded for weeks in February. Commander Lee Archambault and his crew, which includes two former schoolteachers, should reach the international space station on Tuesday. They are delivering one last set of solar wings for the space station and some critical equipment for a relatively new water-recycling system.