Planets Pluto

Planet pluto) Plutonium was the second transuranium element of the actinide series to be discovered. The isotope 238pu was produced in 1940 by Seaborg, McMillan, Kennedy, and Wahl by deuteron bombardment of uranium in the 60-inch cyclotron at Berkeley, California. Plutonium also exists in trace quantities in naturally occurring uranium ores. It is formed in much the same manner as neptunium, by irradiation of natural uranium with the neutrons which are present. 

Plutonium, Pu G. T. Seaborg, 1940 Bombardment of jU The planet Pluto (next... 

The gas giant planets Jupiter, Saturn, Uranus and Neptune. The planet Pluto has a status of its own, and has recently been renamed a dwarf planet. 

In August 2006, the International Astronomical Union redefined the term planet and decided that the former ninth planet in the solar system should be referred to as a dwarf planet with the number 134340. The dwarf planet Pluto and its moon, Charon, are the brightest heavenly bodies in the Kuiper belt (Young, 2000). The ratio of the mass of the planet to that of its moon is 11 1, so the two can almost be considered as a double planet system. They are, however, quite disparate in their composition while Pluto consists of about 75% rocky material and 25% ice, Charon probably contains only water ice with a small amount of rocky material. The ice on Pluto is probably made up mainly of N2 ice with some CH4 ice and traces of NH3 ice. The fact that Pluto and Charon are quite similar in some respects may indicate that they have a common origin. Brown and Calvin (2000), as well as others, were able to obtain separate spectra of the dwarf planet and its moon, although the distance between the two is only about 19,000 kilometres. Crystalline water and ammonia ice were identified on Charon it seems likely that ammonia hydrates are present. 

The planet Pluto is estimated at a mean distance of 3,666 million miles from the sun. The planet Mars is estimated at a mean distance of 36 million miles from the sun. How much closer to the sun is Mars than Pluto ... 

Plutonium (Pu, [Rn]5/ r 7.v2), name and symbol after the planet Pluto. Discovered (1940, Berkeley) by Glenn T. Seaborg, J.W. Kennedy, A. Wahl. 

Plutonium - the atomic number is. 94 and the chemical symbol is Pu. The name derives from the planet Pluto, (the Roman god of the underworld). Pluto was selected because it is the next planet in the solar system beyond the planet Neptime and the element plutonium is the next element in the period table beyond neptunium. Plutonium was first synthesized in 1940 by American chemists Glenn T. Seaborg, Edwin M. McMillan, Joseph W. Kennedy and Arthur C. Wahl in the nuclear reaction U( H, 2n) Np = P => Pu. The longest half-life associated with this unstable element is 80 million year Pu. 

Look up an account of the discovery of the planet Pluto. What can be said about the effectiveness of the factors in the models that described the motions of the planets other than Pluto What can be said about the lack of fit of these models to the available astronomical data How was the lack of fit accounted for ... 

Plutonium is the second transuranium element after neptunium. The element was named after the planet Pluto. 

This isotope had a half-life of about 24,000 years. It proved to be fissionable (56) and was the basis for the plutonium atomic bomb. Concentrated work on the new element was now begun by the Manhattan Project. The main work was done at Chicago. At this time it became desirable to have names for the elements which had previously been called simply 93 and 94 by the men who worked with them. The name suggested by McMillan, neptunium, was therefore adopted for 93, and by analogy 94 was named plutonium from the planet Pluto, next beyond Neptune in the solar system (53, 69). 

Plutonium Pu 94 G.T,Seaborg,J,W,Kennedy... United States From "the planet Pluto"... 

Plutonium (Z = 94) was discovered in 1940 by Seaborg and co-workers. It was also named in analogy to uranium, after the planet Pluto. The first isotope of Pu was produced by cyclotron irradiation of uranium with 16 MeV deuterons ... 

If all of this sugar cane were converted into sugar cubes (0.5 inch on a side) and stacked end to end, the sugar cubes would extend 1.6 x IQio miles, or to the planet Pluto. 

Neptune s largest moon, Triton, was discovered within weeks of the discovery of the planet itself. It is one of the most distant objects in the solar system. Even the outermost planet, Pluto, and its moon, Charon, spend considerable time on their eccentric orbits closer to the Sun than Triton. Its nature remained a mystery until the advent of new astronomical methods in the 1970s and 1980s and the flyby of the Voyager 2 spacecraft in 1989. In many ways, it is a planetary body on the edge —on the outer edge of the main part of the solar system, and the inner edge of the realm of comets and the recently discovered Kuiper belt objects. As such, it shares some of the characteristics of the icy satellites of the rest of the outer solar system with some of the nature of the colder, more distant, cometary bodies. 

Mercury orbits the Sun at a mean distance of 0.387 astronomical units (AU). The high eccentricity of the planet s orbit (e = 0.206), however, dictates that it can be as far as 0.467 AU away from the Sun, and as close as 0.307 AU. The high eccentricity attributed to Mercury s orbit is the second largest in the solar system, only the planet Pluto has a more eccentric orbit. (Eccentricity in astronomy indicates that an orbit is not absolutely circular. The value of e = 1 indicates an orbit shaped as a parabola. An ellipse is less than one, and a circle has zero eccentricity.)... 

Seaborg s team suggested the name plutonium for the new element, in honor of the planet Pluto. The two elements just before plutonium in the periodic table had also been named for planets uranium for Uranus and neptunium for Neptune. 

Polarity Negative Quality Fixed Element Water Symbol The Scorpion Ruling Planet Pluto Opposite Sign Taurus... 

Regardless of your Sun sign, the ruler of your chart is Pluto. And don t let anyone tell you that Pluto is just a dwarf planet. Pluto rules destruction, transformation, and nuclear power. He doesn t have to be big. You should also know that two planets are credited with dominion over Scorpio Pluto, the ruler of modern times, and Mars, the traditional ruler. By sign, house, and aspect, both planets play leading roles in your chart. 

Here s the rule The transits that pack the biggest wallop are those made by the slowest planets — Saturn, Uranus, Neptune, and Pluto — to the Sun, the Moon, the Ascendant, and the faster planets. Contacts made by the faster planets are usually short-lived. Contacts made by the slower planets to the slower planets (such as Uranus opposite your Pluto or Neptune conjunct your Saturn) may be too subtle to detect (unless the natal planet happens to occupy a prominent position in your chart). But contacts made by a slow planet to one of your personal planets — Pluto conjunct your Moon, Uranus opposite your Sun, and so on — signify the chapters of your life. 

In real life, a system is any part of the universe that we wish to consider. If we are conducting an experiment in a beaker, then the contents of the beaker is our system. For an astronomer calculating the properties of the planet Pluto, the solar system might be the system. In considering geochemical, biological, or environmental problems here on Earth, the choice of system is... 

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