Spheres in the Sand
Written by Andrew Shumway, Postdoctoral Researcher at the University of Washington It is not common for a rover to spot nearly perfect spheres in the soil beneath its wheels. Over two decades ago, the Opportunity rover famously discovered spherules made of hematite (nicknamed “blueberries”) near its landing site in Meridiani Planum. More recently, the Perseverance […]
Published by NASA on 07/29/2025
