NASA Pushes Back Discovery Launch Again

NASA has pushed the launch of space shuttle Discovery back again, this time until at least the end of next week. Engineers are still troubleshooting a pesky fuel sensor problem.

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NASA had hoped a Sunday launch was still possible, but a complicated troubleshooting process won't let that happen. Engineers still haven't been able to pinpoint why a liquid hydrogen sensor in the shuttle's external fuel tank gave a false reading just hours before Wednesday's scheduled lift-off. NASA's Kyle Herring says the space agency will err on the side of caution.

He says the orbitor has 2 million parts, so technical issues aren't all that surprising.

NASA still has until the end of July to launch Discovery. After that, the next launch window is sometime in September.

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