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