Washington, July 11 (RIA Novosti) The launch of space shuttle Endeavour has been delayed again by 24 hours to “allow technical teams additional time to evaluate lightning strikes at Launch Pad 39A that occurred during Friday’s thunderstorm,” NASA said Saturday.
The launch of Endeavour that was to have gone ahead Saturday will now take place Sunday.

Two previous launches were postponed after hydrogen gas was found to be leaking from a vent line connected to the external tanks. NASA technicians carried out repairs realigning a fuel plate and installing new seals to rectify the problem.

The 16-day mission will feature five spacewalks and completion of construction to the Japan Aerospace Exploration Agency’s Kibo laboratory. Astronauts will attach a platform to the outside of the Japanese module that will allow experiments to be exposed to space.

The Endeavour crew comprises Commander Mark Polansky, Pilot Doug Hurley and Mission Specialists Dave Wolf, Christopher Cassidy, Tom Marshburn, Tim Kopra and Canadian Space Agency astronaut Julie Payette.

Kopra will join the space station crew and replace Japanese astronaut Koichi Wakata, who will return to Earth concluding a three-month stay at the station.