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American Focus > Blog > Tech and Science > NASA Rovers Keep Getting Stuck, And We Finally Know Why : ScienceAlert
Tech and Science

NASA Rovers Keep Getting Stuck, And We Finally Know Why : ScienceAlert

Last updated: August 10, 2025 12:10 am
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NASA Rovers Keep Getting Stuck, And We Finally Know Why : ScienceAlert
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Understanding Why Robotic Rovers Get Stuck on Alien Worlds

As humanity continues to explore the mysteries of the Solar System through robotic probes, we are constantly learning and improving our understanding of how these machines operate in alien environments.

Back in 1970, the first extraterrestrial robotic rover, Lunokhod 1, was launched from Earth. However, it has taken over half a century for scientists to unravel the mystery behind why these innovative rovers keep getting stuck in the soils of distant worlds.

According to mechanical engineer Dan Negrut from the University of Wisconsin-Madison, the key lies in considering not just the rover’s gravitational pull but also the effect of gravity on the sand present on the Moon’s surface. By incorporating these factors into physics-based simulations, engineers can gain valuable insights into rover mobility on granular soil.

One of the challenges faced in designing rovers for extraterrestrial missions is the unique environmental conditions of other planets. Factors such as lower gravity and different soil compositions can impact the mobility of rovers. For instance, Mars missions have been hindered by dust storms that leave sand drifts on solar panels, preventing power generation.

Despite careful planning, rovers still encounter difficulties on alien worlds, with some even getting permanently stuck. To address this issue, Negrut and his team used computer simulations to analyze the behavior of rovers on sandy surfaces under varying gravitational conditions. They discovered that sand on the Moon and Mars behaves differently than on Earth, affecting traction and causing wheels to get stuck more easily.

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This breakthrough in understanding the unique properties of extraterrestrial dust could pave the way for designing more robust rovers for future space exploration missions. Negrut emphasized the significance of their research in solving engineering challenges and expressed pride in their contribution to NASA’s efforts.

The study detailing these findings has been published in the Journal of Field Robotics, marking a significant step forward in enhancing the performance and reliability of robotic rovers in space exploration.

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