A US watchdog has denied a protest filed against NASA by Amazon CEO Jeff Bezos’ space exploration company, Blue Origin, after the space agency chose Elon Musk’s SpaceX to build its next lunar lander.

The Government Accountability Office (GAO) rejected Blue Origin’s protest on Friday, stating that NASA was within its rights to select a single company – SpaceX – to build its lander. NASA signed a contract worth almost $3 billion with SpaceX in April, after earlier saying it would take bids from multiple contractors.

The GAO also rejected a protest by defense contractor Dynetix, which also hoped to bid for the NASA contract. In a statement, the GAO said that NASA “reserved the right to make multiple awards, a single award, or no award at all.”

When NASA awarded the contract in April, it said that SpaceX bid was highly rated and represented “the best value to the government.” (RT)