We often imagine asteroids as monolithic, frozen relics of the early solar system—static rocks drifting through the vacuum. However, new analysis of the asteroid Bennu, published in the journal *Earth*, suggests a far more dynamic and uneven history. Researchers have identified evidence that water once threaded through the asteroid via narrow channels, acting as a chemical architect that divided the celestial body into distinct mineralogical zones.
Lead author Mehmet Yesiltas and his team found that this fluid movement was not uniform. Instead of saturating the entire object, the water followed specific paths, creating a patchwork of chemical environments. This discovery explains a long-standing curiosity: how Bennu managed to preserve fragile, carbon-based regions while simultaneously developing much hardier minerals, such as sulfur, in other areas.
This lack of uniformity indicates that Bennu did not evolve as a single entity but as a collection of micro-environments, each exposed to different processes over eons. While some pockets remained shielded and pristine, others underwent significant metamorphic changes. By mapping these variations, scientists are gaining a more precise understanding of the chaotic physical and chemical transitions that shaped the building blocks of our planetary neighborhood.
With reporting from Olhar Digital.
Source · Olhar Digital
