28. Curiosity - Earth.com

Curiosity’s mastcam took this picture of the rover’s own tracks, left as it traversed the Martian soil through a feature called the Dingo Gap. The rover arrived nine years before Perseverance’s landing, but it’s still in operation and sending images back to Earth. And to give you an idea of Curiosity’s size, those two tire tracks are about 9 feet apart.

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