A report out from the Government Accountability Office raised serious questions about NASA's next generation of flight vehicle.

The report released Thursday said there are many unknowns that could affect both the timetable and price tag of the Constellation program.

The GAO said there is considerable pressure within NASA to finish the project on schedule so the gap between space flights doesn't get any bigger.

Several concerns were brought up by the GAO.

Among them, excessive vibrations during launch could be unfit for crew members, the Ares rockets may not have enough power to reach orbit, and the technology doesn't yet exist to create heat tiles strong enough for the Orion capsule to survive re-entry through the Earth's atmosphere.

In response to the report, Space Coast congressman Dave Weldon is renewing his push to continue space shuttle flights in Brevard County.

Weldon said in a statement: "The best way to avoid an employment disaster is to put new money into NASA's budget to fly the shuttle during Constellation's development. This will tack pressure off of NASA and more importantly provide a softer landing to the employees at KSC."

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