On May 4, 2022, the InSight seismometer detected an earthquake with a magnitude of 4.7, an event now referred to as the "Big One on Mars." This quake is particularly noteworthy because Mars does not have plate tectonics, the geological process that typically causes earthquakes on Earth. Scientists were initially inclined to believe that the seismic activity was caused by a meteorite impact, but a new study published recently questions that assumption and suggests alternative explanations for the event. The discovery of this quake has sparked renewed interest in understanding the internal structure and geological activity of Mars. While Earth's tectonic plates constantly shift and collide, creating earthquakes, Mars is believed to have a more stable interior. However, this event challenges that belief and opens the door for further research into the planet's geology. Scientists are now examining data more closely to determine whether Mars experiences seismic activity through other mechanisms, such as the movement of molten rock or the collapse of underground structures. The year 2015 marked the 50th anniversary of the first successful NASA missions to Mars, which began with the Mariner 4 probe in 1965. Since then, a total of 15 robotic missions conducted by various NASA centers have provided valuable insights into the planet's surface, atmosphere, and potential for past or present life. These missions have also laid the groundwork for future human exploration of Mars, with plans for crewed missions currently under development. As researchers continue to analyze data from the InSight mission and other Mars probes, they hope to uncover more about the planet's interior and the forces that shape its surface. Understanding seismic activity on Mars could provide clues about the planet's history and evolution, as well as inform strategies for future exploration and settlement.