Half a century after the Apollo astronauts left the last bootprints in lunar dust, the Moon has once again become a destination of fierce ambition and delicate engineering.
This time, it’s not just superpowers racing to plant flags, but also private companies, multinational partnerships and robotic scouts aiming to unlock the Moon’s secrets and lay the groundwork for future human return.
So far in 2025, lunar exploration has surged forward. Several notable missions have launched toward or landed on the Moon. Each has navigated the long journey through space and the even trickier descent to the Moon’s surface or into orbit with varying degrees of success. Together, these missions reflect both the promise and difficulty of returning to the Moon in this new space race defined by innovation, competition and collaboration.
As an aerospace engineer specializing in guidance, navigation and control technologies, I’m deeply interested in how each mission – whether successful or not – adds to scientists’ collective understanding. These missions can help engineers learn to navigate the complexities of space, operate in hostile lunar environments and steadily advance toward a sustainable human presence on the Moon.
Why is landing on the Moon so hard?
Lunar exploration remains one of the most technically demanding frontiers in modern spaceflight. Choosing a landing site involves complex trade-offs between scientific interest, terrain safety and Sun exposure.
The lunar south pole is an especially attractive area, as it could contain water in the form of ice in shadowed craters, a critical resource for future missions. Other sites may hold clues about volcanic activity on the Moon or the solar system’s early history.
Each mission trajectory must be calculated with precision to make sure the craft arrives and descends at the right time and place. Engineers must account for the Moon’s constantly changing position in its orbit around Earth, the timing of launch windows and the gravitational forces acting on the spacecraft throughout its journey.
They also need to carefully plan the spacecraft’s path so that it arrives at the right angle and speed for a safe approach. Even small miscalculations early on can lead to major errors in landing location – or a missed opportunity entirely.
Once on the surface, the landers need to survive extreme swings in temperature – from highs over 250 degrees Fahrenheit (121 degrees Celsius) in daylight down to lows of -208 F (-133 C) at night – as well as dust, radiation and delayed communication with Earth. The spacecraft’s power systems, heat control, landing legs and communication links must all function perfectly. Meanwhile, these landers must avoid hazardous terrain and rely on sunlight to power their instruments and recharge their batteries.
These challenges help explain why many landers have crashed or experienced partial failures, even though the technology has come a long way…
