NASA’s InSight Mars lander has uncovered something surprising about the Red Planet. After analyzing years of data, scientists discovered that Mars is spinning faster each year, shortening its days by tiny fractions of a millisecond.
Researchers from Delft University in the Netherlands have a potential reason for this acceleration. They propose the existence of a “negative mass anomaly” deep beneath Mars. This anomaly may be a plume of hot, buoyant material, pushing on the planet’s rotation.
Bart Root, an assistant professor of planetary exploration, explains, “The Martian surface is ancient and shows complex processes. By studying both interior and surface features, we can better understand Mars and our solar system.”
One focus of their study is the Tharsis volcanic province, a vast area near Mars’ equator filled with some of the largest volcanoes in the solar system. The team believes that beneath this region lies material that could create new volcanic activity over time.
Root and his colleagues ran computer simulations suggesting this buoyant material’s movement could affect Mars’ rotation. “As this lighter material rises, something heavier must sink, which can cause the planet to speed up,” he elaborated.
Interestingly, recent studies show that Mars has been considered less geologically active than Earth, yet these findings indicate that its interior might still hold significant energy.
The researchers stress the importance of conducting more detailed studies, possibly calling for a dedicated gravity mission to Mars to explore these mysteries further.
With these insights, we see how much we still have to learn about our neighboring planet. Understanding Mars could help us grasp the broader dynamics within our solar system.
For more, check out the Journal of Geophysical Research: Planets for the full study.
