Today in History: August 24

The International Astronomical Union published an article, “Definition of a Planet in the Solar System: Resolutions 5 and 6,” ten years ago today. (The link is to a PDF file.)

In popular culture, what the IAU did ten years ago today was demote Pluto (seen above) from one of the classic nine planets of the solar system, the nine whose names we all grew up memorizing and reciting, to one of several or many or thousands of “dwarf planets,” leaving us with eight planets. Schoolchildren everywhere possibly find it odd that this elicited as much controversy as it did.

The article employed in an official way a term that had been around since the early 1990s: dwarf planet. A dwarf planet is an object that is massive enough to be a ball (in scientific terms, it is a spheroid that is in hydrostatic equilibrium) and orbits the Sun, but it is not massive enough to have cleared its lane through space.
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Today in History: August 23

The execution of the Scottish independence fighter Sir William Wallace (above) was considered so important that even though it took place more than seven centuries ago, we know that it took place on precisely this date in 1305.

Wallace’s main argument in his own defense was that he needed no defense against the charge of treason because he had not committed treason—”I could not be a traitor to [King] Edward, for I was never his subject”—which was considered treasonous in itself. The manner of his execution was brutal and has not been performed in almost two centuries in Great Britain (which means that it was performed for almost five more centuries). Post-execution, Wallace’s body parts were displayed for decades after.
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Today in History: August 22

On this date in 1902, the presidential motorcade was born.

In 1899, President William McKinley became the first president to ride in a car, a Stanley Steamer, but it was President Theodore Roosevelt who was the first to do so publicly. On August 22, 1902, while in Hartford, Connecticut, he rode in a Columbia Electric Victoria Phaeton. Because the car could reach thirteen miles per hour, the police could not keep up on foot, so they rode horses in front and bicycles alongside.

American automobile manufacturing was in its infancy in 1902, so designs were many and many designs were experimental/guesses at what might work or be popular: about half the cars on the market were electric and the other half gasoline-fueled. Roosevelt rode in a Hartford-built Columbia Electric Victoria Phaeton, which seated the driver in an external box behind the passengers at the rear of the car; two 20-volt batteries that totaled approximately 800 pounds; rubber tires; and car offered the driver four speeds, with the maximum speed thirteen miles an hour. The driver controlled the vehicle with a tiller, seen in the photo at top.
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