NASA adds additional shuttle flight to final schedule

NASA doesn’t know yet where it will get the money, but on Thursday the space agency officially added another space shuttle launch to its schedule — the final one for the fleet.

The space agency set a target launch date of June 28 for the shuttle Atlantis and started preparations for the 135th and last shuttle flight. The four-member crew will take up supplies to the International Space Station, make one spacewalk, and return a faulty pump that has bedeviled engineers.

Now three missions remain before NASA retires its shuttle fleet this year. The shuttle Discovery’s last mission is slated for Feb. 24, and Endeavour’s is set for April.