Curiosity rover reaches Mount Sharp spider web site on Mars
Updated
Updated · Futura · May 8
Curiosity rover reaches Mount Sharp spider web site on Mars
8 articles · Updated · Futura · May 8
At the 10-20km ridge network, NASA's rover took 291 images and drilled rocks including Altadena to test how the formations developed.
Scientists think groundwater once filled fractures with minerals that later hardened into ridges, while magnesium sulfates point to evaporating water and a shift from wetter to drier Martian conditions.
The site also contains unexpected calcium sulfate veins and unusual rocks, suggesting Mount Sharp's climate history is more complex and potentially relevant to past habitable environments.
New data hints Mars's water-rich era lasted longer than believed. How much of its climate history have we gotten wrong?
Beyond building rock webs, did Mars's ancient groundwater also provide the energy needed to support microbial life?
Prolonged Groundwater Activity on Mars Revealed by Curiosity’s Exploration of Boxwork Formations on Mount Sharp
Overview
NASA's Curiosity rover explored complex boxwork formations on Mount Sharp, Mars, formed by ancient mineral-rich groundwater flowing through fractures and depositing calcium sulfate. Over time, softer rock eroded away, leaving these ridges standing. Curiosity discovered pea-sized nodules scattered along ridge walls and sandy hollows, revealing groundwater activity persisted much longer than previously thought. This prolonged subsurface water created stable environments that could have supported microbial life even as surface waters vanished during Mars' gradual drying. The rover's careful navigation of this challenging terrain and ongoing study of sulfate minerals are key to understanding Mars' climate shift and the extended timeline of its habitability.