Lagrangian Points

In 1772 mathematician Joseph Louis Lagrange discovered a peculiar consequence of the law of gravity when applied to two bodies orbiting one another, such as Jupiter and the Sun. According to his calculations, there would be two positions along the orbi of Jupiter 60 degrees ahead and 60 degrees behind the planet where the gravity of Jupiter and the Sun would cause small objects near those sites lo oscillate without falling toward Jupiter or the Sun. In 1904, 132 years later, asteroids began to...

Is Pluto A Planet

As information about Pluto has increased, the size attributed to Pluto has decreased. It is certainly the smallest planet, far smaller than Mercury. It is considerably smaller in size and mass than our Moon. At the same time, Pluto has shrunk in the estimation of some astronomers to the point that they are calling for the expulsion of Pluto from the ranks of planethood and its demotion to the category of asteroid. How does Pluto fit in with the minor planets Lousy. First of all, it's too large....

Jupiter

The internal structure of Uranus compared to that of Earth and Jupiter. Voyager 2 indicated that a two-layer model for the Interior of Uranus is correct rather than the earlier three-layer model. (The internal structure of each planet is drawn to scale, but not its size compared to the others. Uranus is about 4 times the diameter of Earth Jupiter is more than 11.) the sunlight it receives. The upper atmosphere of Uranus, warmed feebly by sunlight and the weak internal heat of the planet, is...

Clyde Tombaugh After Pluto

Clyde Tbmbaugh took leave from the Lowell Observatory each school year beginning in the fall of 1932 to formally study astronomy at the University of Kansas on a scholarship. He entered as a 26-year-old freshman and tried to enroll in the freshman astronomy class. But the head of the department was adamant For a planet discoverer to enroll in a course of introductory astronomy is unthinkable.' At the end of spring semester 1934, he married Patricia Irene Edson from Kansas City, and they spent...

William H Pickering Amd Planets O P Q R S T And U

Pickering (1858-1938) made and published more predictions for the existence of trans-Neptunian planets than any other astronomer. Like Percival Lowell, Pickering was born in Boston, came from a family of social and intellectual distinction, was well educated (M.I.T.), and had travel and adventure in his blood (Pickering especially liked primitive areas and mountain climbing). Like Lowell, Pickering was a bundle of energy. Besides leading four solar eclipse expeditions as a staff...

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such an extraordinarily beautiful planet, said astronomer Richard S., of the giant worlds, Neptune, surprisingly, has more visible a res in its atmosphere than Uranus or even Saturn. Only Jupiter, of Ibe four planets along Voyager2's route, could exceed Neptune in cloud-,0un contrasts. Yet how strange to see convection clouds and even eruptive cloud vior on a world so far from the Sun. The Sun's heat drives the weather on Earth. But Neptune is too distant for sunlight to stir its at- nosphere...

Trouble with Uranus

Who can say but your new star (Uranus), which exceeds Saturn in its distance from the sun, may exceed him as much in magnificence of attendance Who knows what new rings, new satellites, or what other nameless and numberless phenomena remain behind, waiting to reward future industry . sir Joseph Banks, president. Royal Society, on awarding Herschel the Copley Medal (November 1781) Uranus required a major conceptual leap for the public and the scientific world. A new planet A solar system twice...