![](https://www.sciencenews.org/wp-content/uploads/2023/10/090723_cc_50YA-Mercury_feat.jpg)
Excerpt from the November 10, 1973 issue of Science News
Mariner 10 flew by Mercury three times from 1974 to 1975. The NASA spacecraft encountered a cratered, moonlike terrain as it mapped the planet’s surface (a photomosaic of the southern hemisphere shown).
JPL-Caltech/NASA
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