砂の中の球体

NASA's Perseverance rover has discovered unusual spherules (small spheres) on Mars, prompting scientific investigation into their origin. Unlike the hematite "blueberries" found by the Opportunity rover, these spherules have a basaltic composition. Scientists believe they formed either from molten rock ejected during a meteoroid impact or from lava during a volcanic eruption.

Analyzing the spherules' composition could reveal details about the early Martian environment, such as the makeup of impacting meteoroids or the nature of past volcanic activity in the Jezero Crater region. These findings offer insights into the dynamic history of Mars.