- 2634 - PLANETS - how they got their names? March 2020, in the early morning you can see Jupiter, Saturn, and Pluto. Binolulars is all you need. Venus in the evening. Jupiter’s moons Callisto, Europa, Io, and Ganymede are visible too.
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--------------------- 2634 - PLANETS - how they got their names?
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- These five naked-eye planets, Mercury, Venus, Mars, Jupiter, and Saturn, have been known since antiquity. The Greeks called them Hermes, Aphrodite, Ares, Zeus, and Cronus.
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- Aphrodite (Venus to the Romans) caused some problems until the third century b.c. Greek observers had named it Phosphorus when it appeared in the morning sky and Hesperus for its evening showing. It was Aristarchus of Samos, born around 310 b.c., who realized that these two objects were one and the same.
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- Centuries later, the Romans adopted the planets of the Greeks and simply changed their names to Mercury, Venus, Mars, Jupiter, and Saturn.
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- All was well until 1781, when German-born English astronomer William Herschel discovered a planet beyond Saturn. For more than half a century, there was no agreement on a name, and astronomers often referred to it as the planet Herschel. The name Uranus was finally added to the list.
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- In 1846, the English and French mathematicians John Couch Adams and Urbain Jean Joseph Le Verrier simultaneously predicted the position of an eighth planet, which astronomers found easily.
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- After much wrangling, astronomers agreed on the name Neptune. Finally, in 1930, a young English girl named far-flung Pluto through an international appeal for suggestions. Uranus, Neptune, and Pluto are all names of Roman gods, so their choices preserved the overall naming scheme of the solar system.
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- Galileo Galilei discovered the first planetary moons around Jupiter in 1609. He wanted to name them the Medician Stars after his benefactor, Cosimo de’ Medici. However, the classical nomenclature that had prevailed for more than 2,000 years won out. Classical names were applied as more and more planetary moons were discovered.
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- Jupiter’s moons are Callisto, Europa, Io, and Ganymede and 63 other moons
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- The mold was broken at Uranus when planetary scientists named its moons after characters found in the works of Shakespeare: Umbriel, Titania, Oberon, Ariel, and 23 other moons
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- Uranus moons Mirnda, Ariel, Umbriel, and Oberon and 23 smaller moons
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- Alexander Pope named Neptune’s moons from Greek water gods: Triton, Nereid, Nesso, Proteus, and 10 other moons
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- Pluto’s moons came from mythological inhabitants of the underworld. Charon, Nix, and Hydra.
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- The Greeks gave our Moon the name Selene, and Earth was Gaia. Both our modern words Earth and Moon derive from Middle English. So rather than Gaia or Selene, we have just plain old Earth and the Moon.
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- Not quite as romantic when astronomers name stuff.
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------------------------------ Other reviews about the planets:
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- 2448 - PLANET NINE - could it be a blackhole? Maybe there is an ancient, grapefruit-size blackhole hiding out in our solar system. This tiny, heavy object might in fact take the place of a theoretical planet that might be tugging on other objects in our solar system.
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- 965 - The chemistry of planet formation. The Chemistry of Planet Formation. We have 8 planets in our Solar System. Our Sun is only one star and there are billions of stars in our own galaxy. How many other stars have planets? The answer today is 322 planets have been found around other suns , and, we are adding new planets at the rate of one per week
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- 935 - Planet temperatures. If you walk into a wine cellar , it’s cold. A few feet underground it is a constant 55 F. So you may think that the deeper you go the colder it gets. Not so. After 20 feet the temperature begins to climb 1 F for every 100 to 200 feet. When you get to the center of the Earth it is 8,500 F. The surface of the Sun is 11,000 F. An inventor in Idaho, ex-HP, is designing a thermo pump, ( a reverse refrigerator ) to take advantage of the temperature differences between the surface and deep underground. It becomes a cheap, sustainable energy source.
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- 928 - Planet formation. No other place has been found in the Cosmos that could support life as we know it. But, that has not stopped us from looking. Astronomers have found more than 200 planets in other solar systems. How they formed and how they contain such wide diversity is a new mystery. We thought we had a design for planet formation that matched our Solar System. In contrast, other solar systems are so diverse and supposedly formed out of chaos.
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- 919 - Planet travel. Planet Travel. Astronomy today has technology that is beyond the imagination. And, at the same time we have imagination far beyond our technology. Let me give you an example. In the fall of 2007 astronomers observed a planet that transits in front of its star. It is 63 lightyears away in the Constellation Vulpecula.
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- 840 - Planet Pegasi and Dopper astronomy. The planet 51 Pegasi b was discovered in 1995. It was the first planet discovered orbiting a normal star, like our Sun. When watching the star astronomers were able to detect a rhythmic wobble using the Doppler Shift Technique.
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- 839 - Our gaseous planets.- Our Gaseous Planets. Astronomers have discovered over 250 planets outside our Solar System. An the same time they reduced the number of planets in our Solar System from nine to eight. After 75 ears the ninth “planet” got plutoed and kicked out of the planet category and in to the Kuiper Belt with the rest of the big icy comets.
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- 710 - Fourier discovers he terrestrial planets.
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- 691 - Other planets in other solar systems.
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- 591 - Osiris , a planet around another star.
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- 41 - The five visible planets.
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- 29 - Our gaseous planets.
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- February 26, 2020 2634
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--------------------- Wednesday, February 26, 2020 --------------------
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