WASHINGTON — SpaceX has filed a protest over the award of a launch contract to United Launch Alliance for a NASA planetary science mission, claiming it could carry out the mission for significantly less money.

The protest, filed with the Government Accountability Office (GAO) Feb. 11, is regarding a NASA procurement formally known as RLSP-35. That contract is for the launch of the Lucy mission to the Trojan asteroids of Jupiter, awarded by NASA to ULA Jan. 31 at a total cost to the agency of $148.3 million.

The GAO documents did not disclose additional information about the protest, other than the office has until May 22 to render a decision. NASA said that, as a result of the protest, it's halted work on the ULA contract. [Launch Photos: NASA's InSight Mars Lander Blasts Off on Atlas V Rocket]

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