The launch of NASA’s space shuttle endeavor has been delayed again. The spacecraft was originally set to be launched on April 29, but the initial launch date was delayed due to some problems encountered with the hydraulic system of the Endeavour.

The launch date was then moved to May 2, only to be delayed once more to Sunday May 8. But the date has passed and still there is no launching, NASA has now released a statement that the earliest would be the later half of this month.

NASA will be holding a press conference today to let the public know the status of the launching and give out explanations as to why there have been delays.

“Kennedy (Space Center) technicians are continuing work to resolve an issue in a heater circuit associated with Endeavour’s hydraulic system that resulted in the launch postponement”, said the official statement of NASA. “Technicians determined the failure was inside an aft load control assembly, which is a switchbox in the shuttle’s aft compartment, and possibly its associated electrical wiring.”

NASA has yet to determine the underlying cause of some of the failures, but they guarantee that their technicians will substitute or replace hardware that could cause the problems, “This weekend, technicians will install and check out new wiring that bypasses the suspect electrical wiring connecting the switchbox to the heaters,” the release stated. “They will also run the heaters for up to 30 minutes to verify they are working properly and complete retesting of the other systems powered by the switchbox.”

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