Recent gravity studies of Mars have uncovered large, dense structures hidden beneath the planet's surface, offering new insights into the geological activity that may still be occurring on the Red Planet.

Studies on Mars have revealed hidden structures and dense areas beneath old ocean beds, influencing the volcanic activity of Olympus Mons. Using gravity data and new insights from NASA’s InSight mission,

"These dense structures could be volcanic in origin or could be compacted material due to ancient impacts," a researcher said.

A new analysis of Mars' gravitational field has revealed hidden structures buried beneath the remains of an ancient ocean. The work, which was presented this week at the Europlanetary Science Congress in Berlin and will be published as a study in the journal Geophysical Research Letters: Planets,

Giant, dense structures have been discovered beneath the surface of Mars and they are leaving experts both mystified and excited. The first of these, confirmed by researchers in a new paper, is an underground mass measuring around 1,

The paper "The global gravity field of Mars reveals an active interior" will be published in an upcoming edition of JGR: Planets. The lead author is Bart Root of the Delft University of Technology. Some of the results go against an important concept in geology.