Mars Subsurface Thermal Findings
New discoveries about the interior of Mars have revealed a significant thermal disparity between the two hemispheres of the planet. Data collected from gravitational measurements by NASA spacecraft suggest that the rocky mantle beneath the southern hemisphere may be 200 to 400 degrees Celsius warmer than that beneath the northern hemisphere. Techniques such as limb tomography have been used to analyze subtle variations in the gravitational field and infer the properties of the planet's internal layers. These findings support the hypothesis that internal differences may be the result of either a massive impact that struck Mars more than 4 billion years ago or that the thickness of the southern crust has contributed to heat retention. These results are important for understanding Mars' geological evolution and its volcanic activity history, and will aid in designing future missions to study the planet's interior more precisely.
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