From the NASA Phoenix Mission site:The launch of the Phoenix spacecraft has been rescheduled to Aug. 4. Due to the forecast for severe weather in the vicinity of the launch pad on Tuesday afternoon, the Delta II launch team was unable to complete fueling of the rocket's second stage. The two available launch times on Aug. 4 are 5:26:34 and 6:02:59 a.m. EDT.
The Phoenix Mars lander's assignment is to dig through the Martian soil and ice in the arctic region and use its onboard scientific instruments to analyze the samples it retrieves.
Both rocket and spacecraft have been undergoing final preparation at NASA's Kennedy Space Center in Florida.
For more information about the Phoenix mission, visit: http://www.nasa.gov/phoenix
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