Rocket Lab is objecting to NASA's grant of a Mars communications orbiter contract to Blue Origin. The contract is worth up to $700 million. In 2021, Blue Origin fought NASA's pick of SpaceX for a crewed lunar lander. That dispute was connected to the lunar lander contract.
Now Blue Origin has won the Mars orbiter contract. Rocket Lab is disputing the decision. Rocket Lab's protest is the ongoing dispute. This time, Blue Origin has won the award and Rocket Lab stands as the challenger.