NASAのインスタグラム(nasa) - 9月17日 10時46分

The gravitational forces the moon and sun exert are responsible for Earth’s rising and falling tides. Earth’s gravity also exerts forces on the Moon in the form of solid body tides that distort its shape. The Moon is slowly receding away from Earth and forces build as the Moon’s tidal distortion diminishes with distance and its rotation period slows with time. These tidal forces combined with the shrinking of the Moon from cooling of its interior have influenced the pattern of orientations in the network of young fault scarps. A prominent lobate fault scarp in the Vitello Cluster is one of thousands discovered. This topography image shows a degraded crater has been uplift as the fault scarp has formed (blues are lower elevations and reds are higher elevations). Boulders in the crater have aligned in rows that parallel the orientation of the fault scarp.

Credits: NASA/LRO/Arizona State University/Smithsonian Institution

#nasa #moon #geology #nasabeyond #earth #gravity #sun science

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