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    • Do the Planets Ever Actually Align?

      Do the Planets Ever Actually Align?

      HowStuffWorks via Yahoo News· 4 days ago

      If you imagine the eight major planets in a single line stretching out from the sun, this alignment occurs roughly every 13.4 trillion years. And our...

    • Pluto: planet or not?

      Pluto: planet or not?

      Las Cruces Sun-News via Yahoo News· 2 days ago

      The third criterion excluded Pluto, as it shares its orbit with other objects. Objects that are round but do not clear the orbit are classified as “dwarf...

    • Is Pluto a planet? It depends.

      Is Pluto a planet? It depends.

      Astronomy Magazine· 6 days ago

      In 1930 a young astronomer from Kansas, employed as an observer at Lowell Observatory in Arizona, discovered Pluto. It was the first planet in the solar...