Planet Pluto discovered 75 years ago - but is it really a planet?

Posted on February 13, 2005 - 20:03 CET by Thomas De Maesschalck

Discovered 75 years ago by Clyde Tombaugh - but still a mystery. That's the story of Pluto, the 9th planet in our solar system. After the death of its founder scientists began to argue whether Pluto should really be considered as a planet or not.

Pluto, with its elongated orbit and odd orbital plane, seems to behave more like other Kuiper Belt objects than other planets, some astronomers say. They also point out Pluto is very small, smaller than Earth's moon.

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Thomas De Maesschalck

Thomas has been messing with computer since early childhood and firmly believes the Internet is the best thing since sliced bread. Enjoys playing with new tech, is fascinated by science, and passionate about financial markets. When not behind a computer, he can be found with running shoes on or lifting heavy weights in the weight room.

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Planet Pluto discovered 75 years ago - but is it really a planet?

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