Nasa has delayed the test flight of an unmanned moon rocket for 24 hours because of poor weather. Skip related content
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Further delay for Nasa Ares rocket
The attempt to launch the Ares 1-X has been reset for 0800 EDT (1200 GMT) on Wednesday.
The flight is the centerpiece of a $445 million NASA technology demonstration program aimed at replacing space shuttles.
Nasa planned to launch the demo rocket earlier but cloudy skies over the Kennedy Space Center and a ship in the "danger zone" prevented the scheduled blast off.
Ares 1-X is currently the world's tallest rocket. It is the first of its type developed by Nasa since the 1970s-era space shuttle. The test flight is intended to verify computer models used to design rockets.
The agency hopes to develop two Ares rockets to return US astronauts to the moon in the 2020s.
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