1.
Hermes
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Hermes is an Olympian god in Greek religion and mythology, the son of Zeus and the Pleiad Maia, and the second youngest of the Olympian gods. Hermes is considered a god of transitions and boundaries and he is described as quick and cunning, moving freely between the worlds of the mortal and divine. He is also portrayed as an emissary and messenger of the gods and he has been viewed as the protector and patron of herdsmen, thieves, oratory and wit, literature and poetry, athletics and sports, invention and trade, roads, boundaries and travelers. In some myths, he is a trickster and outwits other gods for his own satisfaction or for the sake of humankind and his attributes and symbols include the herma, the rooster, the tortoise, satchel or pouch, winged sandals, and winged cap. His main symbol is the Greek kerykeion or Latin caduceus, which appears in a form of two snakes wrapped around a staff with carvings of the other gods. The earliest form of the name Hermes is the Mycenaean Greek *hermāhās, most scholars derive Hermes from Greek ἕρμα herma, prop, heap of stones, boundary marker, from which the word hermai also derives. The etymology of ἕρμα itself is unknown, R. S. P. Beekes rejects the connection with herma and suggests a Pre-Greek origin. Scholarly speculation that Hermes derives from a primitive form meaning one cairn is disputed. In Greek, a find is a hermaion. It is also suggested that Hermes is a cognate of the Vedic Sarama, homer and Hesiod portrayed Hermes as the author of skilled or deceptive acts and also as a benefactor of mortals. In the Iliad, he is called the bringer of luck, guide and guardian. He was an ally of the Greeks against the Trojans. However, he did protect Priam when he went to the Greek camp to retrieve the body of his son Hector and he also rescued Ares from a brazen vessel where he had been imprisoned by Otus and Ephialtes. In the Odyssey, Hermes helps his son, the protagonist Odysseus, by informing him about the fate of his companions. Hermes instructed Odysseus to protect himself by chewing a magic herb, when Odysseus killed the suitors of his wife, Hermes led their souls to Hades. Hermes was then instructed to take her as wife to Epimetheus, aesop featured him in several of his fables, as ruler of the gate of prophetic dreams, as the god of athletes, of edible roots, and of hospitality. He also said that Hermes had assigned each person his share of intelligence, Hermes, as an inventor of fire, is a parallel of the Titan Prometheus. In addition to the lyre, Hermes was believed to have invented many types of racing and the sports of wrestling and boxing, in 1820 Shelley translated this hymn
2.
Argus Panoptes
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Argus Panoptes is a many-eyed giant in Greek mythology. The monstrous entity has been either included or indirectly alluded to in a wide variety of works influenced by Greco-Roman thought over the past several centuries. Argus Panoptes, guardian of the heifer-nymph Io and son of Arestor, was a giant whose epithet, Panoptes, all-seeing, led to his being described with multiple, often one hundred. The epithet Panoptes was applied to the Titan of the Sun, Helios, and was taken up as an epithet by Zeus, Zeus Panoptes. In a way, Walter Burkert observes, the power and order of Argos the city are embodied in Argos the neatherd, lord of the herd and lord of the land, whose name itself is the name of the land. And the goddess stirred in him unwearying strength, sleep never fell upon his eyes and his great service to the Olympian pantheon was to slay the chthonic serpent-legged monster Echidna as she slept in her cave. Heras defining task for Argus was to guard the white heifer Io from Zeus and she charged him to Tether this cow safely to an olive-tree at Nemea. Hera knew that the heifer was in reality Io, one of the many nymphs Zeus was coupling with to establish a new order, to free Io, Zeus had Argus slain by Hermes. The sacrifice of Argus liberated Io and allowed her to wander the earth, according to Ovid, to commemorate her faithful watchman, Hera had the hundred eyes of Argus preserved forever, in a peacocks tail. The myth makes the closest connection of Argus, the neatherd, in the Library of pseudo-Apollodorus, Argos killed the bull that ravaged Arcadia, then clothed himself in its skin. Media related to Argus Panoptes at Wikimedia Commons Theoi Project - Gigante Argos Panoptes Warburg Institute Iconographic Database
3.
Amphora
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An amphora is a type of container of a characteristic shape and size, descending from at least as early as the Neolithic Period. Amphorae were used in vast numbers for the transport and storage of various products and they are most often ceramic, but examples in metals and other materials have been found. The amphora complements the large container, the pithos, which makes available capacities between one-half and two and one-half tons. In contrast, the amphora holds under a half-ton, typically less than 100 pounds, the bodies of the two types have similar shapes. Where the pithos may have small loops or lugs for fastening a rope harness. The necks of pithoi are wide for scooping or bucket access, the necks of amphorae are narrow for pouring by a person holding it by the bottom and a handle. The handles might not be present, the size may require two or three handlers to lift. For the most part, however, an amphora was tableware, or sat close to the table, was intended to be seen, stoppers of perishable materials, which have rarely survived, were used to seal the contents. Two principal types of amphorae existed, the amphora, in which the neck and body meet at a sharp angle. Neck amphorae were used in the early history of ancient Greece. Most were produced with a base to allow upright storage by embedding in soft ground. The base facilitated transport by ship, where the amphorae were packed upright or on their sides in as many as five staggered layers. If upright, the bases probably were held by some sort of rack, heather and reeds might be used as packing around the vases. Racks could be used in kitchens and shops, the base also concentrated deposits from liquids with suspended solid particles, such as olive oil and wines. Amphorae are of use to maritime archaeologists, as they often indicate the age of a shipwreck. They are occasionally so well preserved that the content is still present, providing information on foodstuffs. Amphorae were too cheap and plentiful to return to their origin-point and so, amphora is a Greco-Roman word developing in ancient Greek during the Bronze Age. The Romans acquired it during the Hellenization that occurred in the Roman Republic, cato is the first known literary person to use it
4.
Staatliche Antikensammlungen
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The Staatliche Antikensammlungen in the Kunstareal of Munich is a museum for the Bavarian states antique collections for Greek, Etruscan and Roman art. The Bavarian state collection of Ancient Egyptian art is placed in its own museum. Also Roman art from Bavaria is on display in a separate museum, the Staatliche Antikensammlungen museum however is complemented by the sculptures collection, which is located in the opposite Glyptothek. The neo-classical building at Königsplatz with Corinthian columns was established in 1848 as counterpart to the opposite Glyptothek, the architect was Georg Friedrich Ziebland. Already from 1869 to 1872 the building housed the royal antiquarium before the Munich Secession resided here from 1898 to 1912, from 1919 the building contained the New State Gallery. The museum building was damaged by bombing in World War II but was reconstructed and reopened to the public in the late 1960s to display the State Collection of Antiques. The State Collection of Antiquities is based on the Wittelsbach antique collections, the king acquired also antique gold jewellery from the collection of Caroline Murat, Etruscan bronzes excavated in Perugia and Greek terra-cottas from South Italy. After the kings death in 1868 his collection was united with the Wittelsbach antique collection which was founded already by Albert V, later the museum got extended by purchase and donations. Among these private collections are the donations of Paul Arndt, of James Loeb and these comprehensive collections specialised in smaller antique objects, glassware, bronzes, terra-cottas, jewelry, gold and silver. During World War II the museum lost especially Etruscan pottery, which was stored in the bombed Neue Pinakothek, the internationally renowned collection of antique pottery is outstanding, comparable only with the collections of the Louvre and the British Museum. The Mycenaean pottery is represented as well as the pottery from the geometric, the archaic, the classical, the collection contains numerous masterpieces such as the Belly Amphora by the Andokides Painter. The Standing Woman is a statuette of terracotta. An outstanding example for antique jewellery is the gold Funerary Garland from Armento, a famous Roman Goblet from Cologne made of reticella glass still shows its Latin inscription BIBE MULTIS ANNIS. It was a present of the City of Cologne in return for King Ludwigs support for the completion of Cologne Cathedral, part of the Staatliche Antikensammlungen is also a comprehensive collection of ca 800 engraved gems donated by Helmut Hansmann
5.
Greek mythology
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It was a part of the religion in ancient Greece. Greek mythology is explicitly embodied in a collection of narratives. Greek myth attempts to explain the origins of the world, and details the lives and adventures of a variety of gods, goddesses, heroes, heroines. These accounts initially were disseminated in a tradition, today the Greek myths are known primarily from ancient Greek literature. The oldest known Greek literary sources, Homers epic poems Iliad and Odyssey, focus on the Trojan War, archaeological findings provide a principal source of detail about Greek mythology, with gods and heroes featured prominently in the decoration of many artifacts. Geometric designs on pottery of the eighth century BC depict scenes from the Trojan cycle as well as the adventures of Heracles, in the succeeding Archaic, Classical, and Hellenistic periods, Homeric and various other mythological scenes appear, supplementing the existing literary evidence. Greek mythology has had an influence on the culture, arts. Poets and artists from ancient times to the present have derived inspiration from Greek mythology and have discovered contemporary significance and relevance in the themes, Greek mythology is known today primarily from Greek literature and representations on visual media dating from the Geometric period from c. Mythical narration plays an important role in every genre of Greek literature. Nevertheless, the only general mythographical handbook to survive from Greek antiquity was the Library of Pseudo-Apollodorus and this work attempts to reconcile the contradictory tales of the poets and provides a grand summary of traditional Greek mythology and heroic legends. Apollodorus of Athens lived from c, 180–125 BC and wrote on many of these topics. His writings may have formed the basis for the collection, however the Library discusses events that occurred long after his death, among the earliest literary sources are Homers two epic poems, the Iliad and the Odyssey. Other poets completed the cycle, but these later and lesser poems now are lost almost entirely. Despite their traditional name, the Homeric Hymns have no connection with Homer. They are choral hymns from the part of the so-called Lyric age. Hesiods Works and Days, a poem about farming life, also includes the myths of Prometheus, Pandora. The poet gives advice on the best way to succeed in a dangerous world, lyrical poets often took their subjects from myth, but their treatment became gradually less narrative and more allusive. Greek lyric poets, including Pindar, Bacchylides and Simonides, and bucolic poets such as Theocritus and Bion, additionally, myth was central to classical Athenian drama
6.
Zeus
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Zeus /ˈzjuːs/ is the sky and thunder god in ancient Greek religion, who ruled as king of the gods of Mount Olympus. His name is cognate with the first element of his Roman equivalent Jupiter and his mythologies and powers are similar, though not identical, to those of the Indo-European deities such as Indra, Jupiter, Perun, Thor, and Odin. Zeus is the child of Cronus and Rhea, the youngest of his siblings to be born, in most traditions, he is married to Hera, by whom he is usually said to have fathered Ares, Hebe, and Hephaestus. At the oracle of Dodona, his consort was said to be Dione, Zeus was also infamous for his erotic escapades. These resulted in many godly and heroic offspring, including Athena, Apollo, Artemis, Hermes, Persephone, Dionysus, Perseus, Heracles, Helen of Troy, Minos, and the Muses. He was equated with many foreign weather gods, permitting Pausanias to observe That Zeus is king in heaven is a common to all men. His symbols are the thunderbolt, eagle, bull, and oak, in addition to his Indo-European inheritance, the classical cloud-gatherer also derives certain iconographic traits from the cultures of the Ancient Near East, such as the scepter. Zeus is frequently depicted by Greek artists in one of two poses, standing, striding forward with a thunderbolt leveled in his right hand. The gods name in the nominative is Ζεύς Zeús and it is inflected as follows, vocative, Ζεῦ Zeû, accusative, Δία Día, genitive, Διός Diós, dative, Διί Dií. Diogenes Laertius quotes Pherecydes of Syros as spelling the name, Ζάς, Zeus is the Greek continuation of *Di̯ēus, the name of the Proto-Indo-European god of the daytime sky, also called *Dyeus ph2tēr. The god is known under this name in the Rigveda, Latin, Zeus is the only deity in the Olympic pantheon whose name has such a transparent Indo-European etymology. The earliest attested forms of the name are the Mycenaean Greek
7.
Perseus
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Perseus beheaded the Gorgon Medusa and saved Andromeda from the sea monster Cetus. Perseus was the son of the mortal Danaë and the god Zeus and he was also the half-brother and great grandfather of Heracles. There is some prospect that it descended into Greek from the Proto-Indo-European language, in that regard Robert Graves has espoused the only Greek derivation available. Perseus might be from the Greek verb, πέρθειν, “to waste, ravage, sack, destroy”, according to Carl Darling Buck, the –eus suffix is typically used to form an agent noun, in this case from the aorist stem, pers-. Pers-eus therefore is a sacker of cities, that is, a soldier by occupation, the origin of perth- is more obscure. J. B. Hofmann lists the possible root as *bher-, from which Latin ferio and this corresponds to Julius Pokorny’s *bher-, “scrape, cut. ”Ordinarily *bh- descends to Greek as ph-. This difficulty can be overcome by presuming a dissimilation from the –th– in perthein, that is, Graves carries the meaning still further, to the perse- in Persephone, goddess of death. the classical Perse. daughter of Oceanus. Whether it may be identified with the first element of Persephone is only speculative. ”A Greek folk etymology connected the name of the Persian people. The native name, however, has always had an -a- in Persian, herodotus recounts this story, devising a foreign son, Perses, from whom the Persians took the name. Apparently the Persians themselves knew the story, as Xerxes tried to use it to suborn the Argives during his invasion of Greece, Perseus was the son of Zeus and Danaë, the daughter of Acrisius, King of Argos. Disappointed by his lack of luck in having a son, Acrisius consulted the oracle at Delphi, who warned him that he would one day be killed by his daughters son. In order to keep Danaë childless, Acrisius imprisoned her in a chamber, open to the sky, in the courtyard of his palace, This mytheme is also connected to Ares, Oenopion, Eurystheus. Zeus came to her in the form of a shower of gold, soon after, their child was born, Perseus—Perseus Eurymedon, for his mother gave him this name as well. Fearful for his future, but unwilling to provoke the wrath of the gods by killing the offspring of Zeus and his daughter, danaës fearful prayer, made while afloat in the darkness, has been expressed by the poet Simonides of Ceos. Mother and child washed ashore on the island of Serifos, where they were taken in by the fisherman Dictys, the brother of Dictys was Polydectes, the king of the island. When Perseus was grown, Polydectes came to fall in love with the beautiful Danaë, Perseus believed Polydectes was less than honourable, and protected his mother from him, then Polydectes plotted to send Perseus away in disgrace. He held a banquet where each guest was expected to bring a gift. Polydectes requested that the guests bring horses, under the pretense that he was collecting contributions for the hand of Hippodamia, Perseus had no horse to give, so he asked Polydectes to name the gift, he would not refuse it
8.
Cadmus
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In Greek mythology, Cadmus /ˈkædməs/, Greek, Κάδμος Kadmos), was the founder and first king of Thebes. Cadmus was the first Greek hero and, alongside Perseus and Bellerophon, Cadmus founded the Greek city of Thebes, the acropolis of which was originally named Cadmeia in his honour. Cadmus was credited by the ancient Greeks with introducing the original Alphabet —to the Greeks, herodotus estimates that Cadmus lived sixteen hundred years before his time, or around 2000 BC. Herodotus had seen and described the Cadmean writing in the temple of Apollo at Thebes engraved on certain tripods and he estimated those tripods to date back to the time of Laius the great-grandson of Cadmus. On one of the tripods there was this inscription in Cadmean writing, the Homeric picture of the Mycenaean age betrays extremely little awareness of writing, possibly reflecting the loss during the Dark Age of the earlier Linear B script. Indeed, the only Homeric reference to writing was in the phrase γράμματα λυγρά, grámmata lygrá, literally baneful drawings, but such a suggestion, however attractive, is by no means a certain conclusion in light of currently available evidence. The connection between the name of Cadmus and the origins of either the Linear B script or the later Phoenician alphabet, if any. However, in modern-day Lebanon, Cadmus is still revered and celebrated as the carrier of the letter to the world, according to Greek myth, Cadmuss descendants ruled at Thebes on and off for several generations, including the time of the Trojan War. The etymology of Cadmus name remains uncertain, possible connected words include the Semitic triliteral root qdm signifies east, and the Greek kekasmai to shine. Therefore, the meaning of the name might be, He who excels. After his sister Europa had been carried off by Zeus from the shores of Phoenicia, Cadmus was sent out by his father to find her, and enjoined not to return without her. Unsuccessful in his search - or unwilling to go against Zeus - he came to Samothrace, the island sacred to the Great Gods or the Kabeiroi, whose mysteries would be celebrated also at Thebes. Cadmus did not journey alone to Samothrace, he appeared with his mother Telephassa in the company of his nephew Thasus, son of Cilix, who gave his name to the island of Thasos nearby. An identically composed trio had other names at Samothrace, according to Diodorus Siculus, Electra, there was a fourth figure, Electras daughter, Harmonia, whom Cadmus took away as a bride, as Zeus had abducted Europa. The wedding was the first celebrated on Earth to which the gods brought gifts, according to Diodorus and dined with Cadmus, Cadmus came in the course of his wanderings to Delphi, where he consulted the oracle. He was ordered to give up his quest and follow a cow, with a half moon on her flank, which would meet him. The cow was given to Cadmus by Pelagon, King of Phocis, and it guided him to Boeotia, intending to sacrifice the cow to Athena, Cadmus sent some of his companions to the nearby Ismenian spring for water. They were slain by the springs guardian water-dragon, which was in turn destroyed by Cadmus and he was then instructed by Athena to sow the dragons teeth in the ground, from which there sprang a race of fierce armed men, called the Spartoi
9.
Heracles
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Heracles, born Alcaeus or Alcides, was a divine hero in Greek mythology, the son of Zeus and Alcmene, foster son of Amphitryon and great-grandson and half-brother of Perseus. He was the greatest of the Greek heroes, a paragon of masculinity, the ancestor of clans who claimed to be Heracleidae. In Rome and the modern West, he is known as Hercules, with whom the later Roman emperors, in particular Commodus and Maximian, often identified themselves. The Romans adopted the Greek version of his life and works essentially unchanged, details of his cult were adapted to Rome as well. Extraordinary strength, courage, ingenuity, and sexual prowess with both males and females were among the characteristics commonly attributed to him, together with Hermes he was the patron and protector of gymnasia and palaestrae. His iconographic attributes are the skin and the club. These qualities did not prevent him from being regarded as a figure who used games to relax from his labors. By conquering dangerous archaic forces he is said to have made the safe for mankind. Many popular stories were told of his life, the most famous being The Twelve Labours of Heracles and his figure, which initially drew on Near Eastern motifs such as the lion-fight, was widely known. Heracles was the greatest of Hellenic chthonic heroes, but unlike other Greek heroes, the core of the story of Heracles has been identified by Walter Burkert as originating in Neolithic hunter culture and traditions of shamanistic crossings into the netherworld. Heracles role as a hero, whose death could be a subject of mythic telling, was accepted into the Olympian Pantheon during Classical times. Around him cries of the dead rang out like cries of birds scattering left, in Christian circles a Euhemerist reading of the widespread Heracles cult was attributed to a historical figure who had been offered cult status after his death. The ancient Greeks celebrated the festival of the Heracleia, which commemorated the death of Heracles, what is believed to be an Egyptian Temple of Heracles in the Bahariya Oasis dates to 21 BCE. A reassessment of Ptolemys descriptions of the island of Malta attempted to link the site at Ras ir-Raħeb with a temple to Heracles, several ancient cities were named Heraclea in his honor. A major factor in the tragedies surrounding Heracles is the hatred that the goddess Hera. A full account of Heracles must render it clear why Heracles was so tormented by Hera, Heracles was the son of the affair Zeus had with the mortal woman Alcmene. Zeus made love to her after disguising himself as her husband, Amphitryon, thus, Heracles very existence proved at least one of Zeus many illicit affairs, and Hera often conspired against Zeus mortal offspring as revenge for her husbands infidelities. His twin mortal brother, son of Amphitryon, was Iphicles, Hera did this knowing that while Heracles was to be born a descendant of Perseus, so too was Eurystheus
10.
Io (moon)
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Io /ˈaɪ. oʊ/ is the innermost of the four Galilean moons of the planet Jupiter. It is the fourth-largest moon, has the highest density of all the moons and it was discovered in 1610 and was named after the mythological character Io, a priestess of Hera who became one of Zeuss lovers. With over 400 active volcanoes, Io is the most geologically active object in the Solar System, several volcanoes produce plumes of sulfur and sulfur dioxide that climb as high as 500 km above the surface. Ios surface is dotted with more than 100 mountains that have been uplifted by extensive compression at the base of Ios silicate crust. Some of these peaks are taller than Mount Everest, unlike most satellites in the outer Solar System, which are mostly composed of water ice, Io is primarily composed of silicate rock surrounding a molten iron or iron-sulfide core. Most of Ios surface is composed of extensive plains coated with sulfur, Ios volcanism is responsible for many of its unique features. Numerous extensive lava flows, several more than 500 km in length, the materials produced by this volcanism make up Ios thin, patchy atmosphere and Jupiters extensive magnetosphere. Ios volcanic ejecta also produce a large torus around Jupiter. Io played a significant role in the development of astronomy in the 17th and 18th centuries and it was discovered in January 1610 by Galileo Galilei, along with the other Galilean satellites. This discovery furthered the adoption of the Copernican model of the Solar System, the development of Keplers laws of motion, and the first measurement of the speed of light. In 1979, the two Voyager spacecraft revealed Io to be a geologically active world, with numerous volcanic features, large mountains, the Galileo spacecraft performed several close flybys in the 1990s and early 2000s, obtaining data about Ios interior structure and surface composition. These spacecraft also revealed the relationship between Io and Jupiters magnetosphere and the existence of a belt of high-energy radiation centered on Ios orbit, Io receives about 3,600 rem of ionizing radiation per day. Further observations have made by Cassini–Huygens in 2000 and New Horizons in 2007, as well as from Earth-based telescopes. From the surface of Io, Jupiter would subtend an arc of 19. 5°, although Simon Marius is not credited with the sole discovery of the Galilean satellites, his names for the moons were adopted. Based on a suggestion from Johannes Kepler in October 1613, he devised a naming scheme whereby each moon was named for a lover of the Greek mythological Zeus or his Roman equivalent. He named the innermost large moon of Jupiter after the Greek mythological figure Io, since the surface was first seen up close by Voyager 1, the International Astronomical Union has approved 225 names for Ios volcanoes, mountains, plateaus, and large albedo features. The approved feature categories used for Io for different types of volcanic features include patera, fluctus, vallis, named mountains, plateaus, layered terrain, and shield volcanoes include the terms mons, mensa, planum, and tholus, respectively. Named, bright albedo regions use the term regio, examples of named features are Prometheus, Pan Mensa, Tvashtar Paterae, and Tsũi Goab Fluctus
11.
Jupiter
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Jupiter is the fifth planet from the Sun and the largest in the Solar System. It is a giant planet with a mass one-thousandth that of the Sun, Jupiter and Saturn are gas giants, the other two giant planets, Uranus and Neptune are ice giants. Jupiter has been known to astronomers since antiquity, the Romans named it after their god Jupiter. Jupiter is primarily composed of hydrogen with a quarter of its mass being helium and it may also have a rocky core of heavier elements, but like the other giant planets, Jupiter lacks a well-defined solid surface. Because of its rotation, the planets shape is that of an oblate spheroid. The outer atmosphere is visibly segregated into several bands at different latitudes, resulting in turbulence, a prominent result is the Great Red Spot, a giant storm that is known to have existed since at least the 17th century when it was first seen by telescope. Surrounding Jupiter is a faint planetary ring system and a powerful magnetosphere, Jupiter has at least 67 moons, including the four large Galilean moons discovered by Galileo Galilei in 1610. Ganymede, the largest of these, has a greater than that of the planet Mercury. Jupiter has been explored on several occasions by robotic spacecraft, most notably during the early Pioneer and Voyager flyby missions and later by the Galileo orbiter. In late February 2007, Jupiter was visited by the New Horizons probe, the latest probe to visit the planet is Juno, which entered into orbit around Jupiter on July 4,2016. Future targets for exploration in the Jupiter system include the probable ice-covered liquid ocean of its moon Europa, Earth and its neighbor planets may have formed from fragments of planets after collisions with Jupiter destroyed those super-Earths near the Sun. Astronomers have discovered nearly 500 planetary systems with multiple planets, Jupiter moving out of the inner Solar System would have allowed the formation of inner planets, including Earth. Jupiter is composed primarily of gaseous and liquid matter and it is the largest of the four giant planets in the Solar System and hence its largest planet. It has a diameter of 142,984 km at its equator, the average density of Jupiter,1.326 g/cm3, is the second highest of the giant planets, but lower than those of the four terrestrial planets. Jupiters upper atmosphere is about 88–92% hydrogen and 8–12% helium by percent volume of gas molecules, a helium atom has about four times as much mass as a hydrogen atom, so the composition changes when described as the proportion of mass contributed by different atoms. Thus, Jupiters atmosphere is approximately 75% hydrogen and 24% helium by mass, the atmosphere contains trace amounts of methane, water vapor, ammonia, and silicon-based compounds. There are also traces of carbon, ethane, hydrogen sulfide, neon, oxygen, phosphine, the outermost layer of the atmosphere contains crystals of frozen ammonia. The interior contains denser materials - by mass it is roughly 71% hydrogen, 24% helium, through infrared and ultraviolet measurements, trace amounts of benzene and other hydrocarbons have also been found
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