A realistic Mars mission will involve a complex series of steps and processes to ensure the safety and success of the mission. The mission will begin with the launch of a spacecraft from Earth, which will travel to Mars and enter its orbit. Once in orbit, the spacecraft will deploy a lander that will descend to the surface of Mars and deploy a rover. The rover will then explore the Martian surface, collecting data and samples for analysis. After the rover has completed its mission, the spacecraft will return to Earth, carrying the data and samples collected by the rover. Along the way, the spacecraft will also perform various maneuvers to ensure the safety of the mission, such as avoiding hazardous areas and adjusting its trajectory to avoid collisions with other objects. Finally, the spacecraft will re-enter Earth's atmosphere and land safely.