8 planets left now Pluto left out off our space
A dwarf that got caught in the circle around the sun

from Saeed – Mathematic's 2011 Lyrics 6 on Rap Genius

When Mos Def made “Mathematics” in 1999 he mentioned the 9 planets at the time with the probable 10th on its way well since then we haven’t added a planet we subtracted one now that scientist removed Pluto and categorized it as a dwarf planet and not a major planet in our solar system even though many scientist still believe Pluto as well as other dwarf planets for example Eris should be classified as a planet.

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