Air and Space: Before Pathfinder and Explorer there were the two Viking landers, which landed on Mars and returned photos in 1976. National Air and Space Museum, Washington. [#507-3330] Click on image for next photo.

Before Pathfinder and Explorer there were the two Viking landers, which landed on Mars and returned photos in 1976.  National Air and Space Museum, Washington.  Click for next photo.

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All photos 1998-2019 by Thomas O'Neil