关于这张图
This image of Martian regolith – broken rock and dust – was captured Dec. 2, 2022, by the Sampling and Caching System Camera (known as CacheCam) on NASA's Perseverance Mars rover. The regolith, contained inside a metal tube, is one of two samples that will be considered for deposit on the Martian surface this month as part of the Mars Sample Return campaign. The sample was collected in Mars' Jezero Crater from a pile of wind-blown sand and dust called a "mega-ripple" – a feature similar to but smaller than a dune. Studying regolith with powerful lab equipment back on Earth will allow scienti…
