Message #24257

[Jennie McGrath]

Vulcan: The Planet That Never Was
By Mitzi Buchanan
Tue, January 2, 2007, 12:01 am PST


The Solar System as we know it
Alas, poor Pluto. Demoted last year to dwarf planet status -- not really a planet after all. At least its "day in the sun" lasted for 75 years. We bid it a fond farewell as we pluck it out of the solar system mobile from our fourth-grade science project. Now consider the tragic story of Vulcan. It began its life in 1859 as a calculus equation when French mathematician Urbain Le Verrier tried to account for Mercury's deviation from its predicted orbit. Was it caused by a new planet? After all, Neptune was discovered this way. Over the years, scientists and amateur astronomers joined in the search for the hypothetical planet, but Mercury's proximity to the sun made it difficult to view. Was it just a sunspot or an asteroid? It was a moot point by 1915 when Einstein announced his General Theory of Relativity. It neatly explained the wibble in Mercury's wobble and later viewings during an eclipse confirmed it. There was no planet Vulcan. Ah, fleeting fame!
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