The European Space Agency's ExoMars rover mission has been assigned to launch aboard SpaceX's Falcon Heavy rocket, marking the fourth different launch vehicle planned for the long-delayed project.

The rover mission, which would be Europe's first to successfully land on Mars, has faced numerous setbacks and broken promises regarding its launch arrangements over several years. The mission was originally scheduled to launch much earlier but has been repeatedly postponed due to technical challenges and geopolitical factors.

The assignment to Falcon Heavy represents a significant shift for the European space program, which had previously relied on other launch providers for this critical mission. SpaceX's heavy-lift rocket has successfully completed multiple missions since its debut, providing the agency with a proven launch platform.

The ExoMars rover is designed to search for signs of past or present life on Mars and would mark a major milestone for European space exploration capabilities. The mission has been a priority project for ESA as it seeks to establish a stronger presence in planetary exploration.

No specific launch date has been announced for the mission aboard the Falcon Heavy. The rover will need to complete final preparations and testing before it can proceed to launch, adding to the timeline that has already stretched well beyond original projections.