hd.thomson-multimediaThe Sky at Night The Mapping of Mercury (1957– ) watch online HD
- Original title:The Mapping of Mercury
- Category:TV Episode / Documentary
- Released:1957–
- Actors:Arthur Cross,Patrick Moore
- Duration:20min
- Video type:TV Episode
- Rating 6.9
- Votes 532
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Short summary
| Episode credited cast: | |||
 | Arthur Cross | - | Himself |
| Patrick Moore | - | Himself - Presenter |