According to NASA, the final flight of the Endeavour is delayed for at-least a week because the technicians will have to replace the switch box in the engine compartment.
After the cancellation of lift-off, commander of the six astronauts, Mark Kelly headed back to Houston.
The families of the astronauts were hoping for the lift off on Monday but, NASA made it clear that they need some more time to fix the faulty heating system of Endeavour, because of which the launch of the space shuttle had to be cancelled.
Giffords spokesman, C.J. Karamargin said, “We all had our fingers crossed looking forward to a quick rescheduling of the launch.”