关于这张图
Shown here is a representation of the 21 sample tubes (containing rock, regolith, atmosphere, and witness materials) that have been sealed to date by NASA's Perseverance Mars rover. Red dots indicate the locations where each sample was collected. Squares outlined in red show the texture of an area about 2 inches (5 centimeters) across on a particular rock sample after it was worn down by the rover's abrasion tool (with the exception of "Observation Mountain," which is an image of the surface of a pile of regolith, or broken rock and dust). The one or two squares immediately to the right of ea…
