> Pluto is a planet. The definition of a planet is arbitrary, and always will be.
If you can find an astronomy textbook from the 1830's or early 1840's, it'll list 11 planets...
Ceres (discovered 1801)
Pallas (discovered 1802)
Juno (discovered 1804)
Vesta (discovered 1807)
Uranus (discovered 1781)
As time went on, more and more asteroids were discovered. Today, there are a few hundred thousand asteroids. To keep the number of planets at a manageable number, the asteroids wwere given their own class. Similarly, there are now almost 1300 http://www.minorplanetcenter.n... known objects in Pluto's vicinity. If you want to think of the solar system having 1300 planets, be my guest.
Scientists occasionally make mistakes, based on incomplete data. When more info becomes available, they correct those mistakes. E.g. they junked the Aether theory http://en.wikipedia.org/wiki/A... after the Michelson-Morley experiment.
There was *ALWAYS* major doubt about Pluto's planetary status. This article from 1934 http://blog.modernmechanix.com... is an example.
> So that Pluto ranks as the largest asteroid,
> rather than the smallest planet;
BTW, it's worse than the article suggested; Pluto is actually less than 1/10th the mass of Titan.
> and the dipshits who insist that a kilobyte is 1000 bytes.
So you think the ancient Greeks were dipshits? And the French who introduced the metric system? The real dipshits are the people who arbitrarily change the meanings of words after thousands of years..