71 résultats pour "classical"
-
American Music
I
INTRODUCTION
American Music, the folk, popular, and classical music of the United States--created by American-born or American-trained composers, or originating in American
culture, or written primarily for American audiences.
The country's first permanent orchestra was the New York Philharmonic Society, founded in 1842. Among the first symphonic and operatic composers the mostprominent was William Henry Fry, who composed the first opera by an American ( Leonora, 1845). Fry is best remembered, however, for four symphonies written in the 1850s and 1860s. George F. Bristow wrote the first opera on an American theme; his Rip Van Winkle was performed in New York City in 1855. Town bands, a popular form of community mu...
-
Indian Music
I
INTRODUCTION
Classical Dance of South India
The southern Indian kathakali is a dance drama that dates from the 17th century.
Sangita Ratnakara, was written in the 13th century. However, subsequent writers tended to focus on the emotional connotations of individual ragas, associating them with moods, performance times, colors, and deities, and grouping them in terms of families. The modern theoretical system began in the 16th century, when ragasbegan to be classified according to scale—72 in the Karnāṭak system and 10 principal ones in the Hindustani. The 72 mela, as the Karn āṭak scales are called, are derived thro...
-
Chinese Music
I
INTRODUCTION
Classical Peking Opera
Of the many major forms of regional theater in China, Peking opera is by far the most famous.
World Music TourClick on the instruments to hear music from around the world.© Microsoft Corporation. All Rights Reserved. However, the Confucian beliefs about music were constantly eroded throughout Chinese history by a long tradition of popular entertainment music, favored both at thecourt and by the common folk. Although excluded from official ritual performances for several thousand years, Chinese women musicians and entertainers had a centraland formative role in this entertainment music as...
-
Wolfgang Amadeus Mozart
I
INTRODUCTION
Wolfgang Amadeus Mozart
Wolfgang Amadeus Mozart, an 18th-century Austrian classical composer and one of the most famous musicians of all time,
came from a family of musicians that included his father and sister.
The opera, Mitridati, rè di Ponto (Mithridates, King of Pontus), was produced in 1770 in Milan under Mozart’s direction with success. Also that year the pope made Mozart a knight of the Order of the Golden Spur. A Salzburg and Germany From 1775 to 1780 Mozart was based mainly in Salzburg working for the archbishop Hieronymous von Colloredo. Although dissatisfied with the low pay and limitedopportunities his employment offered, Mozart composed many works during this period, including his first...
- winds Greek and Roman Both Greek and Roman cultures in classical times personified the winds, recognizing the power of these forces.
-
Economics.
Malthus, nature's check was “positive”: “The power of population is so superior to the power of the earth to produce subsistence for man, that premature death must insome shape or other visit the human race.” The shapes it took included war, epidemics, pestilence and plague, human vices, and famine, all combining to level theworld's population with the world's food supply. The only escape from population pressure and the horrors of the positive check was in voluntary limitation of population, no...
-
Learning.
B1 Acquisition The acquisition phase is the initial learning of the conditioned response—for example, the dog learning to salivate at the sound of the bell. Several factors can affect the speed of conditioning during the acquisition phase. The most important factors are the order and timing of the stimuli. Conditioning occurs most quickly when theconditioned stimulus (the bell) precedes the unconditioned stimulus (the food) by about half a second. Conditioning takes longer and the response is...
-
Greek Art and Architecture - USA History.
The struggle between these two city-states and their allies ultimately led to the Peloponnesian War (431-404 BC), which Sparta won. Despite this conflict, the 5th century, often called the Classical period, is usually considered the culmination of Greek art, architecture, and drama, with its highest achievements being the Temple ofZeus at Olympia, the Parthenon in Athens, and the plays of Athenian dramatists Aeschylus, Sophocles, Euripides, and Aristophanes. The 4th century, or Late Classical p...
-
-
Nova - astronomy.
When first discovered, the spectrum of a nova shows that the expanding layers of gas that cause the brightening have temperatures of 40,000° to 50,000° C (70,000°to 90,000° F)—about eight times as hot as the surface of the Sun. By the time a nova reaches maximum brightness, the temperature of the material has fallen to about10,000° C (about 20,000° F), or lower. Just after maximum brightness, the escaping cloud of gas cools and expands enough to become transparent. This transparency allows astro...
-
Italian Literature
I
INTRODUCTION
Italian Literature, literature written in the Italian language from about the 13th century to the present.
Dante’s Inferno and PurgatoryThis illustration comes from a late Gothic edition of The Divine Comedy by the great Italian poet Dante Alighieri. Lucifer,the devil, is at the center of Earth, and the mouth of hell, the inferno, opens below him. At the opposite pole is a mountainleading to purgatory. The manuscript is in the National Library in Florence, Italy.Scala/Art Resource, NY Dante is one of the great figures of world literature. He is remarkable for the loftiness of his thought, the vividne...
-
Greek Art and Architecture - history.
powerful independent city-states. From 334 to 323 BC, Alexander the Great extended his father's empire into Asia Minor (now Turkey), Syria, Egypt, Persia, Afghanistan, and as far as India. D The Hellenistic Period (323-31 BC) Although Alexander the Great extended Greek civilization far beyond the Greek mainland and the boundaries of the Aegean Sea, his empire did not survive his death in 323.After Alexander died, his generals and successors divided the empire into a number of kingdoms: Ptolem...
-
Ancient Greece.
The first culture of Aegean civilization on the Greek mainland is named Mycenaean for the palace at Mycenae on the Pelopónnisos. Scholars call the Mycenaeans the“earliest Greeks” because they are the first people known to have spoken Greek. Mycenaean culture developed later than Minoan. The ancestors of the Mycenaean people wandered onto the mainland from the north and the east from about 4000 to2000 BC, mixing with the people already there, and by about 1400 BC the Mycenaeans had become very...
-
Ancient Greece .
The first culture of Aegean civilization on the Greek mainland is named Mycenaean for the palace at Mycenae on the Pelopónnisos. Scholars call the Mycenaeans the“earliest Greeks” because they are the first people known to have spoken Greek. Mycenaean culture developed later than Minoan. The ancestors of the Mycenaean people wandered onto the mainland from the north and the east from about 4000 to2000 BC, mixing with the people already there, and by about 1400 BC the Mycenaeans had become very...
-
Ancient Greece - USA History.
The first culture of Aegean civilization on the Greek mainland is named Mycenaean for the palace at Mycenae on the Pelopónnisos. Scholars call the Mycenaeans the“earliest Greeks” because they are the first people known to have spoken Greek. Mycenaean culture developed later than Minoan. The ancestors of the Mycenaean people wandered onto the mainland from the north and the east from about 4000 to2000 BC, mixing with the people already there, and by about 1400 BC the Mycenaeans had become very...
-
Confucian philosophy, Chinese
occupies a pre-eminent place in the history of Chinese philosophy. The core of Confucian thought lies in the teachings of Confucius (551-479 BC) contained in the Analects ( Lunyu ), along with the brilliant and divergent contributions of Mencius (372?-289 BC) and Xunzi ( fl. 298-238 BC), as well as the Daxue (Great Learning) and the Zhongyong (Doctrine of the Mean), originally chapters in the Liji (Book of Rites). Significant and original developments, particularly along a quasi-metaphysica...
-
Greece Today, a nation in southeastern Europe,
part of the Balkan Peninsula.
artists carved statues and fashioned jewelry to commemorate the gods. The Classical Age was the height of cultural development. Greece 61 During all of its history, Greece was a collection of city-states, or small communities, rather than a nation. These communities organized around individual political ideals, but the people of this peninsula shared a great deal of culture and trade. They shared a common language and common beliefs in the great pantheon of Zeus and the Olympian Gods. Though c...
-
-
Portraiture
I
INTRODUCTION
Portraiture, visual representation of individual people, distinguished by references to the subject's character, social position, wealth, or profession.
CaracallaCaracalla is a Roman portrait bust in marble of the emperor Marcus Aurelius Antoninus, probably done circa ad 215. Theson of Septimius Severus, Caracalla (as he was known) was a brutal man whose qualities come through in this piece withits dramatic realism. The bust, which is now in the Louvre, Paris, evidently served as the inspiration for Michelangelo’sbust of Brutus more than one thousand years later.Bridgeman Art Library, London/New York The first representations of identifiable ind...
-
Relativity - astronomy.
beta, for example, might be as large as 0.5, and the mass of the electron doubled. The mass of a rapidly moving electron could be easily determined by measuring thecurvature produced in its path by a magnetic field; the heavier the electron, the greater its inertia and the less the curvature produced by a given strength of field ( see Magnetism). Experimentation dramatically confirmed Einstein's prediction; the electron increased in mass by exactly the amount he predicted. Thus, the kinetic ener...
-
Relativity
I
INTRODUCTION
Albert Einstein
In 1905 German-born American physicist Albert Einstein published his first paper outlining the theory of relativity.
in calculating very large distances or very large aggregations of matter. As the quantum theory applies to the very small, so the relativity theory applies to the verylarge. Until 1887 no flaw had appeared in the rapidly developing body of classical physics. In that year, the Michelson-Morley experiment, named after the American physicistAlbert Michelson and the American chemist Edward Williams Morley, was performed. It was an attempt to determine the rate of the motion of the earth through t...
-
Byzantine Art and Architecture
I
INTRODUCTION
Archangel Michael
This depiction of the archangel Michael, in Saint Mark's Cathedral in Venice, Italy, is an example of ancient enamel art.
This Byzantine ivory relief shows Christ the Pantocrator, or ruler of the world, raising his hand in a gesture of blessing. Itcomes from the cover of a lectionary, or book containing portions of the scriptures, and dates from the second golden ageof Byzantine art, the late 10th century. The relief is in the Fitzwilliam Museum, Cambridge, England.Bridgeman Art Library, London/New York Mosaics were the favored medium for the interior adornment of Byzantine churches. The small cubes, or tesserae, t...
-
Michelangelo
I
INTRODUCTION
Michelangelo (1475-1564), Italian painter, sculptor, architect, and poet whose artistic accomplishments exerted a tremendous influence on his contemporaries and on
subsequent European art.
(17 ft) tall, was carved from a block of stone that another sculptor had left unfinished. Michelangelo drew on the classical tradition in depicting David as a nude,standing with his weight on one leg, the other leg at rest ( see contrapposto). This pose suggests impending movement, and the entire sculpture shows tense waiting, as David sizes up his enemy and considers his course of action. While David reveals Michelangelo's expert knowledge of anatomy (he had been dissecting corpses for about...
-
Michelangelo.
(17 ft) tall, was carved from a block of stone that another sculptor had left unfinished. Michelangelo drew on the classical tradition in depicting David as a nude,standing with his weight on one leg, the other leg at rest ( see contrapposto). This pose suggests impending movement, and the entire sculpture shows tense waiting, as David sizes up his enemy and considers his course of action. While David reveals Michelangelo's expert knowledge of anatomy (he had been dissecting corpses for about...
-
Anarchism
view that people ought to prefer their own self-interest to any other principle of conduct, was first developed in ananarchist direction by the Young Hegelian Stirner . Extending Feuerbach's argument against religion to strike at all notions of ‘the sacred', Stirner ( 1845 ) argues that people's potential for self-realization is impeded by the very idea of ethical obligation. Among the various ‘spooks' that restrict our lives at present, the state, with its demand forobedience, is one of the mo...
-
Athens (Greece) - geography.
At the heart of the modern city is Syntagma (Constitution) Square, located east of the Acropolis. The square is bordered by the national Parliament Building, originally aroyal palace completed in 1842 for King Otto I. Nearby is the Tomb of the Unknown Soldier, which features a daily changing of the guard. Several of the city’s principalhotels as well the offices of major banks and airline companies also face the square. Behind the Parliament Building is the National Gardens, a public park that i...
-
-
Archaeology.
Prehistoric archaeology is practiced by archaeologists known as prehistorians and deals with ancient cultures that did not have writing of any kind. Prehistory, a term coined by 19th-century French scholars, covers past human life from its origins up to the advent of written records. History—that is, the human past documented insome form of writing—began 5000 years ago in parts of southwestern Asia and as recently as the late 19th century AD in central Africa and parts of the Americas. Becaus...
- Olympian gods Greek The 12 (sometimes 13) major deities who lived atop Mount Olympus; the primary gods of the Greek pantheon of classical Greece.
-
Athens (Greece) - geography.
expected to further develop the city’s tourism industry. Athens serves as the hub of Greece’s national transportation network. The Greek railway system is centered in Athens, and ferries sail to the rest of the country from theport at Piraeus. The urban area itself in Athens is served by taxis and public buses that must contend with heavily congested traffic. The major part of the city’s metrosubway, Attiko Metro (Athens Metro), was completed in 2000 and serves the heart of Athens; extensions to...
-
Renaissance
I
INTRODUCTION
Renaissance, series of literary and cultural movements in the 14th, 15th, and 16th centuries.
the great writings of ancient Greece and Rome. Intellectuals continued to build on the ideas of the Renaissance during the 18th century Age of Enlightenment, a time when scientific advancements led to a newemphasis on the power of human reason. One of the early Enlightenment thinkers was French philosopher and writer Voltaire. He claimed that the Renaissance was acrucial stage in liberating the mind from the superstition and error that he believed characterized Christian society during the Middl...
-
Renaissance .
the great writings of ancient Greece and Rome. Intellectuals continued to build on the ideas of the Renaissance during the 18th century Age of Enlightenment, a time when scientific advancements led to a newemphasis on the power of human reason. One of the early Enlightenment thinkers was French philosopher and writer Voltaire. He claimed that the Renaissance was acrucial stage in liberating the mind from the superstition and error that he believed characterized Christian society during the Middl...
-
Book
I
INTRODUCTION
Kelmscott Chaucer
The Kelmscott Chaucer was published in 1896 by William Morris' company, the Kelmscott Press.
B Medieval European Books Illustration of Saint Mark in the Ebbo GospelsThis is a page from the illuminated manuscript known as the Ebbo Gospels (about 816-835). It depicts Saint Mark lookingheavenward for inspiration as he writes his gospel account, and is drawn in an expressive, energetic style typical ofmedieval art of that period. The full name of the Ebbo Gospels is the Gospel Book of Archbishop Ebbo of Reims. This pagemeasures about 25 by 20 cm (about 10 by 8 in).Bridgeman Art Library, Lo...
-
House (architecture)
I
INTRODUCTION
Trulli in Alberobello, Italy
Alberobello, in the Apulia region of southeastern Italy, is noted for its unusual limestone houses known as trulli (from
Greek trullos, dome).
Fresco in the Villa of the Mysteries, PompeiiThe Villa of the Mysteries, Pompeii, Italy (built about 50 bc), featured a large hall with this mural encircling it. The mural ispainted in the Second Style of Roman painting. (Historians of art recognize four periods or styles in Roman wall painting.)The mural in the Villa of the Mysteries is thought to depict the initiation rituals of a mystery religion. For this reason, it hasbeen conjectured that the hall was used for cult rituals.Bridgeman Art Li...
-
Renaissance Art and Architecture
I
INTRODUCTION
Renaissance Composition
During the Renaissance (15th and 16th centuries) artists discovered new ways to help them create more realistic and
compelling images.
with reliefs, had been familiar for centuries. A Early Renaissance Sculpture Ghiberti’s Gates of ParadiseThe Gates of Paradise are bronze doors created by Italian Renaissance sculptor Lorenzo Ghiberti between 1425 and 1452for the east entrance to the baptistery of the Florence Cathedral in Italy. This detail, showing Isaac and Esau, is from oneof the doors' ten panels, each of which illustrates a story from the Bible. Ghiberti endowed the scenes with volume, depth,and movement, and helped initi...
-
-
Ludwig van Beethoven
I
INTRODUCTION
Ludwig van Beethoven
Ludwig van Beethoven is considered possibly the greatest Western composer of all time.
the other hand, breaks up the opening theme into contrasting segments in different tempi, whereas customary practice called for stating the theme in its entirety at thebeginning of a movement. In the first movement of the Eroica Symphony, one of the major works from Beethoven’s middle period, he again sought ways to expand upon the prevailing musical forms. At that time, composers usually organized movements in three major parts. First, the exposition introduces the musical themes of the pie...
-
Music
I
INTRODUCTION
World Music Tour
Click on the instruments to hear music from around the world.
Duke EllingtonAmerican composer, bandleader, and pianist Duke Ellington endures as perhaps the most important pioneer in big-bandjazz. Ellington and his orchestra shared a special interdependent relationship: Using the band as his musical workshop,Ellington derived his orchestra’s tone coloring from the unique sound qualities of the group’s individual players. Thisparticular style was later dubbed the “Ellington Effect” by jazz arranger Billy Strayhorn, who also wrote one of the band’ssignature...
-
Jazz
I
INTRODUCTION
Joshua Redman
Saxophonist Joshua Redman, a graduate of Harvard University, became a fast-rising star in jazz in the 1990s.
performed a highly produced, jazz-inspired form of blues that was popular in traveling minstrel shows and vaudeville. Thisexample is from the song “St. Louis Blues,” written by American composer and trumpet player W. C. Handy in 1914 andrecorded by Smith in 1925."St. Louis Blues" performed by Bessie Smith, from The Riverside History of Classic Jazz (Cat.# Riverside RB-005) Riverside Records under master license to Fantasy, Inc. All rightsreserved./Frank DriggsCollection/Archive Photos Jazz is ro...
-
Physics
I
INTRODUCTION
Physics, major science, dealing with the fundamental constituents of the universe, the forces they exert on one another, and the results produced by these forces.
Starting about 1665, at the age of 23, Newton enunciated the principles of mechanics, formulated the law of universal gravitation, separated white light into colors,proposed a theory for the propagation of light, and invented differential and integral calculus. Newton's contributions covered an enormous range of naturalphenomena: He was thus able to show that not only Kepler's laws of planetary motion but also Galileo's discoveries of falling bodies follow a combination of his ownsecond law of m...
-
Pablo Picasso.
Color juxtapositions—between blue and orange, for instance—are intentionally strident and unharmonious. The representation of space is fragmented and discontinuous. While the left side of the canvas is largely Iberian-influenced, the right side is inspired by African masks, especially in its striped patterns and oval forms. Suchborrowings, which led to great simplification, distortion, and visual incongruities, were considered extremely daring in 1907. The head of the figure at the bottom right,...
-
German Literature
I
INTRODUCTION
German Literature, literature written in the German language from the 8th century to the present, and including the works of German, Austrian, and Swiss authors.
Till EulenspiegelThe medieval peasant Till Eulenspiegel appears in many German folktales as a trickster who outwits people in positions ofauthority. In this image his first name is spelled Tyll.Keystone Pressedienst GmbH The rise of the middle class in the 14th and 15th centuries and the struggles of the peasants against the nobility culminated in the great 16th-century religiousrevolution known as the Reformation. This movement was reflected in literature, especially by Martin Luther, whose tra...
-
London (England) - geography.
In the northern part of the West End is Bloomsbury, the city’s traditional intellectual center, with its concentration of bookshops and homes of writers and academics. Inthe early 20th century a number of famous writers, critics, and artists who lived here became known as the Bloomsbury Group. Here, too, is the British Museum, one ofLondon’s chief tourist attractions. Nearby is the giant complex of the University of London, whose various colleges and departments have taken over much ofBloomsbury...
-
Asian Theater
I
INTRODUCTION
Asian Theater, live performance, featuring actors or puppets, native to Asia, a continent with more than 2 billion people of many nations and cultures.
III THEATER IN EAST ASIA Theater in East Asia includes the traditions of China, Japan, and Korea. Most Chinese theater is urban, secular (nonreligious) entertainment, influenced by the ethics of Confucianism. However, a belief in spirits influences rituals performed by ethnic minorities in China, and Buddhism dominates traditional Tibetan performance. Japanesedramatic forms combine native shamanistic performance, secular entertainment, and cultural or religious influences from China and Kore...
-
-
Baroque Art and Architecture
I
INTRODUCTION
German Baroque Architecture
The baroque style of architecture flourished in Germany in the 18th century.
C Early baroque styles Conversion of Saint PaulItalian baroque painter Caravaggio painted scenes of realism and drama, often selecting lofty, religious themes anddepicting them with lower-class characters and settings with dramatic spotlighting. With its unidealized characters andfocus on the horse’s body, his Conversion of Saint Paul seems to record a stable accident, not a miraculous conversion byGod. This work was painted in 1601 and is in the Cerasi Chapel, Santa Maria del Popolo, Rome, Ita...
-
Greece - country.
minerals, such as chromium, copper, uranium, and magnesium, are relatively small. Greece’s small petroleum deposits, located under the Aegean Sea near the island ofThásos, are rapidly being depleted. There are no significant reserves of natural gas. Greece’s forests, probably abundant in ancient times, have been significantly depleted. Subsequent soil erosion has made reforestation efforts difficult. Although muchof Greece’s soil is rocky and dry, the country’s mountains are interspersed with sm...
-
Rock Music
I
INTRODUCTION
Carlos Santana
Mexican-born guitarist Carlos Santana became a superstar in the late 1960s with a string of hits and an appearance at the
famous Woodstock rock festival in 1969.
point (a single pitch sustained through a progression of chords), and the parallel movement of chords, derived from a technique on the electric guitar known as bar-chording. Many elements of African American music have been a continuing source of influence on rock music. These characteristics include riffs (repeated patterns), backbeats (emphasizing the second and fourth beats of each measure; see Musical Rhythm: Pulse and Meter ), call-and-response patterns, blue notes (the use of certain...
-
Psychotherapy.
Other managed-care companies pay therapists a set fee to meet with a client for up to a specified maximum number of sessions depending on the nature of theproblem, free of interference from case reviewers. For example, a managed-care firm may pay a therapist $200 to hold up to eight sessions with a person. If the clientuses all eight sessions, the therapist normally loses money. But if treatment stops after two or three sessions, the therapist makes a profit. This relatively new system iscontrov...
-
William Shakespeare
I
INTRODUCTION
William Shakespeare
English playwright and poet William Shakespeare, who lived in the late 1500s and early 1600s, is regarded as the greatest
dramatist in the history of English literature.
Avon, Warwickshire, a prosperous town in the English Midlands. Based on this record and on the fact that children in Shakespeare’s time were usually baptized two orthree days after birth, April 23 has traditionally been accepted as his date of birth. The third of eight children, William Shakespeare was the eldest son of John Shakespeare, a locally prominent glovemaker and wool merchant, and Mary Arden, thedaughter of a well-to-do landowner in the nearby village of Wilmcote. The young Shakespeare...
-
Ancient Greece - history.
Palace of KnossosThe ancient city of Knossos was a center of the Minoan civilization, an advanced society on Crete named after Minos, a legendaryCretan king. Skilled in such fields as engineering and architecture, the Minoans constructed the palace at Knossos in 1700 bc. Aserious fire at least three centuries later caused the collapse of the palace and foreshadowed the subsequent decline of the city.Wolfgang Kaehler Settlers had begun sailing from Asia Minor to Crete about 6000 BC because the i...
-
Feudalism
I
INTRODUCTION
Feudalism, contractual system of political and military relationships existing among members of the nobility in Western Europe during the High Middle Ages.
lord”; thus, it was not rebellion for a subvassal to fight against his lord’s lord. In England, however, William the Conqueror and his successors required their vassals’vassals to take oaths of fealty to them. B Duties of a Vassal Military service in the field was basic to feudalism, but it was far from all that the vassal owed to his lord. When the lord had a castle, he might require his vassals togarrison it, a service called castle-guard. The lord also expected his vassals to attend his cour...
-
Ballet
I
INTRODUCTION
Tchaikovsky's The Nutcracker
The Nutcracker is a classic ballet with music by Peter Ilyich Tchaikovsky.
Joffrey Ballet SchoolTraining for classical ballet dancers must begin when the students are very young. Here, teacher Dorothy Lister workswith her pre-ballet class of six-year-olds at the Joffrey Ballet School. These students are learning the five basic positions ofclassical ballet.Susan Kunklin/Photo Researchers, Inc. Different systems of ballet training have evolved, named after countries (Russia, France) or teachers (Italian dancer Enrico Cecchetti, Danish choreographer AugustBournonville). T...
-
-
Pottery
I
INTRODUCTION
Pottery, clay that is chemically altered and permanently hardened by firing in a kiln.
basket, or a clay or plaster form. Liquid clay can be poured into plaster molds. A pot can be coil built: Clay is rolled between the palms of the hands and extended intolong coils, a coil is formed into a ring, and the pot is built up by superimposing rings. Also, a ball of clay can be pinched into the desired shape. The most sophisticatedpottery-making technique is wheel throwing. The potter's wheel, invented in the 4th millennium BC, is a flat disk that revolves horizontally on a pivot. Both...
-
Pluto - astronomy.
depended on how Pluto was classified. The status of Pluto drew world attention in 2006 when the official body that governs the naming of astronomical objects, the International Astronomical Union (IAU),voted for an official definition of the term planet . According to the standards adopted, a “classical planet” must orbit the Sun, must have a rounded shape from effects of its own gravity, and must be the dominant object in its region of space, having cleared the neighborhood of its orbit of oth...