SpaceX is working to increase its flight rate this year as competitors debut new vehicles for the launch market.

According to sources who spoke to CNBC's David Faber, Elon Musk, the owner and CEO of Twitter, is looking for a new head of the company.

SpaceX is preparing for a crucial trial of its colossal rocket, which is intended for both commercial launches and the Mars mission that Elon Musk has been aiming for.