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Voyager 2 at Neptune From the edge of our planetary system, the spacecraft Voyager 2 transmitted back to Earth images of Neptune, its large moon Triton, its strange ring system and its retinue of small satellites. In this montage constructed from high-resolution images, the south pole of Triton dominates, with cloud-streaked Neptune in the background. The flyby of Neptune in 1989 was the last Voyager planetary encounter. These two doughty spacecraft opened up the outer solar system for scientific exploration, and we shall not see their like again. Alfred McEwen, USGS Flagstaff