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The launch of the Discovery shuttle was postponed to Saturday morning

Update from Thursday evening: the engineers want to check the hydrogen valves another day

Update 27/8/09 time 21:10
The space shuttle Discovery will not take off before Saturday, 06:59 Israel time (Friday 23:59 West Coast time). The launch, which has been delayed since Tuesday due to a malfunction in one of the hydrogen valves, was supposed to take place tomorrow Friday morning, but the engineers asked for an extra day to prepare in case the instruments show readings similar to those that occurred when the shuttle was refueled with liquid hydrogen on Tuesday.
The malfunction in the hydrogen valve was discovered during the refueling that was carried out as part of the preparations on the day of the launch. In case of delays, NASA drains the fuel from the external fuel tank and the shuttle in order not to jeopardize its safety.

We will continue and update
26/8/09 08:15 The goal of the engineers is to enable a launch on Friday morning

Space Shuttle Discovery still on the launch pad, August 26, 2009
Space Shuttle Discovery still on the launch pad, August 26, 2009

The space shuttle Discovery that was supposed to be launched this morning to the International Space Station is still on the launch pad. NASA hopes to be able to launch it on the night between Thursday and Friday (00:22 EST, 07:22 as of Friday morning),
According to Mike Moses, the chairman of the launch team, the two-day delay is required for the inspection of a valve that regulates the liquid hydrogen and which developed problems during filling operations from the fuel tank on Tuesday evening.

The comprehensive test data of the valve will be examined before the next attempt to refuel the shuttle during Thursday.

The STS-128 mission that Discovery is supposed to embark on is primarily intended to deliver supplies to the International Space Station.

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