 | Milton D. Heifetz, Wil Tirion - Nature - 2004 - 100 pages
...against the background of a different constellation. * Some general point s of interest. 1 . There are five planets visible to the naked eye: Mercury, Venus, Mars, Jupiter and Saturn. 2. Mars has a distinctive reddish tint. * » 3. Mercury is difficult to see since it is always seen... | |
 | Melanie Melton Knocke - Juvenile Nonfiction - 2007 - 370 pages
...excellent astronomy software packages available. Observing Planets: With the Naked Eye There are only 5 planets visible to the naked eye — Mercury, Venus, Mars, Jupiter, and Saturn — and they all look like stars. Venus and Jupiter are brighter than most stars. Mercury and Saturn... | |
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It is also suggested that the five large trilithon archways represent the five planets visible to the naked eye: Mercury, Venus, Mars, Jupiter and Saturn. 
