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Venus
Venus is the second planet from the Sun. It is often called Earth's "twin" or "sister" planet for having almost the same size and mass, and the closest orbit to Earth's. While both are rocky planets, Venus has an atmosphere much thicker and denser than Earth and any other rocky body in the Solar System. Its atmosphere is composed of mostly carbon dioxide (), with a global sulfuric acid cloud cover and no liquid water. At the mean surface level the atmosphere reaches a temperature of and a pressure 92 times greater than Earth's at sea level, turning the lowest layer of the atmosphere into a supercritical fluid. Venus is the third brightest object in Earth's sky, after the Moon and the Sun, and, like Mercury, appears always relatively close to the Sun, either as a "morning star" or an "evening star", resulting from orbiting closer ( inferior) to the Sun than Earth. The orbits of Venus and Earth make the two planets approach each other in synodic periods of 1.6 years ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Goddess Venus
Venus (; ) is a Roman goddess whose functions encompass love, beauty, desire, sex, fertility, prosperity, and victory. In Roman mythology, she was the ancestor of the Roman people through her son, Aeneas, who survived the fall of Troy and fled to Italy. Julius Caesar claimed her as his ancestor. Venus was central to many religious festivals, and was revered in Roman religion under numerous cult titles. The Romans adapted the myths and iconography of her Greek counterpart Aphrodite for Roman art and Latin literature. In the later classical tradition of the West, Venus became one of the most widely referenced deities of Greco-Roman mythology as the embodiment of love and sexuality. As such, she is usually depicted nude. Etymology The Latin theonym and the common noun ('love, charm') stem from a Proto-Italic form reconstructed as ''*wenos-'' ('desire'), itself from Proto-Indo-European (PIE) ' ('desire'; cf. Messapic , Old Indic 'desire'). Derivatives include ''venustus'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Venus Symbol (bold)
Planetary symbols are used in astrological symbol, astrology and traditionally in astronomical symbol, astronomy to represent a classical planet (which includes the Sun and the Moon) or one of the modern planets. The classical symbols were also used in alchemy for the Planetary metal, seven metals known to the ancients, which were Classical planets in Western alchemy, associated with the planets, and in calendars for the seven days of the week associated with the seven planets. The original symbols date to Greco-Roman astronomy; their modern forms developed in the 16th century, and additional symbols would be created later for newly discovered planets. The seven classical planets, their symbols, days and most commonly associated planetary metals are: The International Astronomical Union (IAU) discourages the use of these symbols in modern journal articles, and their style manual proposes one- and two-letter abbreviations for the names of the planets for cases where planetary symb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Retrograde Motion
Retrograde motion in astronomy is, in general, orbital or rotational motion of an object in the direction opposite the rotation of its primary, that is, the central object (right figure). It may also describe other motions such as precession or nutation of an object's rotational axis. Prograde or direct motion is more normal motion in the same direction as the primary rotates. However, "retrograde" and "prograde" can also refer to an object other than the primary if so described. The direction of rotation is determined by an inertial frame of reference, such as distant fixed stars. In the Solar System, the orbits around the Sun of all planets and dwarf planets and most small Solar System bodies, except many comets and few distant objects, are prograde. They orbit around the Sun in the same direction as the sun rotates about its axis, which is counterclockwise when observed from above the Sun's north pole. Except for Venus and Uranus, planetary rotations around their a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Roman Religion
Religion in ancient Rome consisted of varying imperial and provincial religious practices, which were followed both by the people of Rome as well as those who were brought under its rule. The Romans thought of themselves as highly religious, and attributed their success as a world power to their collective piety () in maintaining good relations with the gods. Their polytheistic religion is known for having honoured many deities. The presence of Greeks on the Italian peninsula from the beginning of the historical period influenced Roman culture, introducing some religious practices that became fundamental, such as the of Apollo. The Romans looked for common ground between their major gods and those of the Greeks (), adapting Greek myths and iconography for Latin literature and Roman art, as the Etruscans had. Etruscan religion was also a major influence, particularly on the practice of augury, used by the state to seek the will of the gods. According to legends, most of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cytherean
Cytherean is an adjective literally meaning ''of Cythera'' (Latin ''Cytherēa'', from the Greek adjective Κυθέρεια ''Kythereia'', from Κύθηρα ''Kythēra'' 'Cythera'). Cythera is a small Greek island, southeast of the Peloponnesus, and a legendary birthplace of the goddess Aphrodite (Venus). The word ''Cytherean'' was first applied to the goddess and later, due to word taboo, to the planet Venus that had been named after the goddess. When planetary scientists began to have a need to discuss details of the planets, a need arose for generally accepted adjectives. As the planets had traditionally been associated with gods in classical mythology, there were commonly used adjectives that already related to some characteristic of the gods; for example, Mars and "martial" (warlike), Saturn and "saturnine" (gloomy). A consensus arose to use a slightly modified form - "Martian" for Mars, "Saturnian" for Saturn - that avoided these existing connotations. In the case of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ishtar Terra
Ishtar Terra is the second largest of the three continental terrae regions on the planet Venus, the others being Aphrodite Terra and Lada Terra. It is a highland region named after the Akkadian goddess Ishtar, and is found in the north of the planet. Note that Ishtar Terra is located near the negative pole if Venus's rotation is defined as prograde by the right-hand rule. The rotation of the planet is commonly characterized as retrograde in order to correlate its northern hemisphere with Earth's, in which case Ishtar Terra is near the north pole. This is the convention normally used for maps. In size, it is roughly between Australia and the contiguous United States, making it the second-largest of the terrae. On its eastern edge lies the great mountain chain Maxwell Montes, which is about high, compared to Mount Everest at . On one side of the mountain chain is the impact crater Cleopatra, in diameter filled with lava. Ishtar Terra contains the four main mountain rang ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Venusian (other)
Venusian , Venerean , or Venereal may refer to: * Venus, a planet ** Venusians, hypothetical or fictional beings that inhabit the planet Venus * Venus (goddess) See also * Cytherean Cytherean is an adjective literally meaning ''of Cythera'' (Latin ''Cytherēa'', from the Greek adjective Κυθέρεια ''Kythereia'', from Κύθηρα ''Kythēra'' 'Cythera'). Cythera is a small Greek island, southeast of the Peloponn ..., for a discussion of adjectives relating to the planet Venus * Venus (other) {{disambiguation Venus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Love And Lust Deities
A love deity or lust deity is a deity in mythology associated with romance, sex, love, lust, or sexuality. Love deities are common in mythology and are found in many polytheistic religions. Female sex goddesses are often associated with beauty and other traditionally feminine attributes. Sub-Saharan Africa Western African-Congo Efik * Anansa, goddess of the Sea, allure and beauty. Vodun * Baron La Croix, loa of the dead and sexuality. * Baron Samedi, loa of the dead, sex, and resurrection. * Erzulie Freda Dahomey, loa of love, beauty, jewelry, dancing, luxury, and flowers. Yoruba * Oshun, goddess of luxury and pleasure, sexuality and fertility, beauty and love, the river and fresh water venerated in Ifá, Yoruba religion, Dahomey mythology, Vodun, Santería, Candomblé, Haitian Vodou. Afroasiatic Middle East Canaanite *Astarte, goddess of sex and war. Egyptian * Bastet, goddess of felines, love, protection, perfume, beauty, and dance. * Bes, god of music, lo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Solar Day
A synodic day (or synodic rotation period or solar day) is the period for a celestial object to rotate once in relation to the star it is orbiting, and is the basis of solar time. The synodic day is distinguished from the sidereal day, which is one complete rotation in relation to distant stars and is the basis of sidereal time. In the case of a tidally locked planet, the same side always faces its parent star, and its synodic day is infinite. Its sidereal day, however, is equal to its orbital period. Earth Earth's synodic day is the time it takes for the Sun to pass over the same meridian (a line of longitude) on consecutive days, whereas a sidereal day is the time it takes for a given distant star to pass over a meridian on consecutive days. For example, in the Northern Hemisphere, a synodic day could be measured as the time taken for the Sun to move from exactly true south (i.e. its highest declination) on one day to exactly south again on the next day (or exactly true ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carbon Monoxide
Carbon monoxide (chemical formula CO) is a poisonous, flammable gas that is colorless, odorless, tasteless, and slightly less dense than air. Carbon monoxide consists of one carbon atom and one oxygen atom connected by a triple bond. It is the simplest oxocarbon, carbon oxide. In coordination complexes, the carbon monoxide ligand is called ''metal carbonyl, carbonyl''. It is a key ingredient in many processes in industrial chemistry. The most common source of carbon monoxide is the partial combustion of carbon-containing compounds. Numerous environmental and biological sources generate carbon monoxide. In industry, carbon monoxide is important in the production of many compounds, including drugs, fragrances, and fuels. Indoors CO is one of the most acutely toxic contaminants affecting indoor air quality. CO may be emitted from tobacco smoke and generated from malfunctioning fuel-burning stoves (wood, kerosene, natural gas, propane) and fuel-burning heating systems (wood, oil, n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geometric Albedo
In astronomy, the geometric albedo of a celestial body is the ratio of its actual brightness as seen from the light source (i.e. at zero phase angle (astronomy), phase angle) to that of an ''idealized'' flat, fully reflecting, diffuse reflection, diffusively scattering (Lambertian reflectance, Lambertian) disk with the same cross-section. (This phase angle refers to the direction of the light paths and is not a phase angle in its normal meaning in Phase (waves), optics or Phasor (electronics), electronics.) Diffuse reflection, Diffuse scattering implies that radiation is reflected isotropically with no memory of the location of the incident light source. Zero phase angle corresponds to looking along the direction of illumination. For Earth-bound observers, this occurs when the body in question is at opposition (astronomy), opposition and on the ecliptic. The visual geometric albedo refers to the geometric albedo quantity when accounting for only electromagnetic radiation in the vis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bond Albedo
The Bond albedo (also called spheric albedo, planetary albedo, and bolometric albedo), named after the American astronomer George Phillips Bond (1825–1865), who originally proposed it, is the fraction of power in the total electromagnetic radiation incident on an astronomical body that is scattered back out into space. Because the Bond albedo accounts for all of the light scattered from a body at all wavelengths and all phase angles, it is a necessary quantity for determining how much energy a body absorbs. This, in turn, is crucial for determining the equilibrium temperature of a body. Because bodies in the outer Solar System are always observed at very low phase angles from the Earth, the only reliable data for measuring their Bond albedo comes from spacecraft. Phase integral The Bond albedo (''A'') is related to the geometric albedo (''p'') by the expression :A = pq where ''q'' is termed the ''phase integral'' and is given in terms of the directional scattered flux '' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
