WASHINGTON (AP) — NASA doesn’t have enough money to get its new, $12 billion rocket system off the ground by the end of 2017 as planned, federal auditors say.

The Government Accountability Office issued a report Wednesday saying NASA’s Space Launch System is at “high risk of missing” its planned December 2017 initial test flight. The post-space shuttle program would build the biggest rockets ever — larger than the Saturn V rockets which sent men to the moon — to send astronauts to asteroids and Mars.

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