火星上的手指石
2022年6月20日 Rock Fingers on Mars Image Credit: NASA, JPL-Caltech, MSSS Explanation: There, just right of center, what is that? The surface of Mars keeps revealing new surprises with the recent discovery of finger-like rock spires. The small nearly-vertical rock outcrops were imaged last month by the robotic Curiosity rover on Mars. Although similar in size an...