生物特征

Part of a large rock on Mars is shown being mostly orange. On the rock are several irregular light-colored areas surrounded by a dark border. The spots are only millimeters across but might be a remnant biosignature of ancient Martian life. Please see the explanation for more detailed information.
图中火星上一块大型岩石的一部分，大部分呈橙色。岩石上有几个不规则的浅色区域，周围环绕着深色边框。这些斑点直径只有几毫米，但可能是古代火星生命残留的生物特征。有关更多详细信息，请参阅说明。