Adding planets means new textbooks, toys

(AP) -- The idea that our nine-planet solar system may soon join the obsolete world of eight-track tapes and slide rules should send science teachers, textbook writers and toymakers back to the cosmic drawing board.

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<p><a href="http://www.physorg.com/news74964889.html">Adding planets means new textbooks, toys</a></p> <p>(AP) -- The idea that our nine-planet solar system may soon join the obsolete world of eight-track tapes and slide rules should send science teachers, textbook writers and toymakers back to the cosmic drawing board.</p>