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Pan Crater
Pan is the largest crater on Jupiter's moon The Moon is Earth's only natural satellite. It is the fifth largest satellite in the Solar System and the largest and most massive relative to its parent planet, with a diameter about one-quarter that of Earth (comparable to the width of ... Amalthea. It is kilometers across and at least 8 kilometers deep, with its center's coordinates being 30°N, 30°W. It is named after Pan, the Greek god of shepherds and the countryside, or the son of Amalthea and Hermes in some legends. References Amalthea (moon) Impact craters on Jupiter's moons {{crater-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Impact Crater
An impact crater is a circular depression in the surface of a solid astronomical object formed by the hypervelocity impact of a smaller object. In contrast to volcanic craters, which result from explosion or internal collapse, impact craters typically have raised rims and floors that are lower in elevation than the surrounding terrain. Lunar impact craters range from microscopic craters on lunar rocks returned by the Apollo Program and small, simple, bowl-shaped depressions in the lunar regolith to large, complex, multi-ringed impact basins. Meteor Crater is a well-known example of a small impact crater on Earth. Impact craters are the dominant geographic features on many solid Solar System objects including the Moon, Mercury, Callisto, Ganymede and most small moons and asteroids. On other planets and moons that experience more active surface geological processes, such as Earth, Venus, Europa, Io and Titan, visible impact craters are less common because they become eroded ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jupiter
Jupiter is the fifth planet from the Sun and the List of Solar System objects by size, largest in the Solar System. It is a gas giant with a mass more than two and a half times that of all the other planets in the Solar System combined, but slightly less than one-thousandth the mass of the Sun. Jupiter is the List of brightest natural objects in the sky, third brightest natural object in the Earth's night sky after the Moon and Venus, and it has been observed since Pre-history, prehistoric times. It was named after the Jupiter (mythology), Roman god Jupiter, the king of the gods. Jupiter is primarily composed of hydrogen, but helium constitutes one-quarter of its mass and one-tenth of its volume. It probably has a rocky core of heavier elements, but, like the other giant planets in the Solar System, it lacks a well-defined solid surface. The ongoing contraction of Jupiter's interior generates more heat than it receives from the Sun. Because of its rapid rotation, the planet' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Natural Satellite
A natural satellite is, in the most common usage, an astronomical body that orbits a planet, dwarf planet, or small Solar System body (or sometimes another natural satellite). Natural satellites are often colloquially referred to as ''moons'', a derivation from the Moon of Earth. In the Solar System, there are six planetary satellite systems containing 209 known natural satellites altogether. Seven objects commonly considered dwarf planets by astronomers are also known to have natural satellites: , Pluto, Haumea, , Makemake, , and Eris. , there are 442 other minor planets known to have natural satellites. A planet usually has at least around 10,000 times the mass of any natural satellites that orbit it, with a correspondingly much larger diameter. The Earth–Moon system is a unique exception in the Solar System; at 3,474 kilometres (2,158 miles) across, the Moon is 0.273 times the diameter of Earth and about of its mass. The next largest ratios are the Neptune–Tr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amalthea (moon)
Amalthea is a moons of Jupiter, moon of Jupiter. It has the third closest orbit around Jupiter among known moons and was the fifth moon of Jupiter to be discovered, so it is also known as . It is also the fifth largest moon of Jupiter, after the four Galilean Moons. Edward Emerson Barnard discovered the moon on 9 September 1892 and named it after Amalthea (mythology), Amalthea of Greek mythology. It was the last natural satellite to be discovered by direct visual observation; all later moons were discovered by astronomical photography, photographic or digital imaging. Amalthea is in a close orbit around Jupiter and is within the outer edge of the Rings of Jupiter#Amalthea gossamer ring, Amalthea Gossamer Ring which is formed from dust ejected from its surface. Jupiter would appear 46.5 degrees in diameter from its surface. Amalthea is the largest of the inner satellites of Jupiter and is irregularly shaped and reddish in color. It is thought to consist of porous water ice with ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pan (god)
In ancient Greek religion and Greek mythology, mythology, Pan (; grc, wikt:Πάν, Πάν, Pán) is the god of the wild, shepherds and flocks, Pastoral#Pastoral music, rustic music and impromptus, and companion of the nymphs. He has the hindquarters, legs, and horns of a goat, in the same manner as a faun or satyr. With his homeland in rustic Arcadia (ancient region), Arcadia, he is also recognized as the god of fields, groves, wooded glens, and often affiliated with sex; because of this, Pan is connected to fertility and the season of spring. In Religion in ancient Rome, Roman religion and myth, Pan's counterpart was Faunus, a nature god who was the father of Bona Dea, sometimes identified as Fauna (goddess), Fauna; he was also closely associated with Silvanus (mythology), Sylvanus, due to their similar relationships with woodlands. In the 18th and 19th centuries, Pan became a significant figure in Romanticism, the Romantic movement of western Europe and also in the 20th-centu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Greek Mythology
A major branch of classical mythology, Greek mythology is the body of myths originally told by the Ancient Greece, ancient Greeks, and a genre of Ancient Greek folklore. These stories concern the Cosmogony, origin and Cosmology#Metaphysical cosmology, nature of the world, the lives and activities of List of Greek mythological figures, deities, Greek hero cult, heroes, and List of Greek mythological creatures, mythological creatures, and the origins and significance of the ancient Greeks' own cult (religious practice), cult and ritual practices. Modern scholars study the myths to shed light on the religious and political institutions of ancient Greece, and to better understand the nature of myth-making itself. The Greek myths were initially propagated in an oral tradition, oral-poetic tradition most likely by Minoan civilization, Minoan and Mycenaean Greece, Mycenaean singers starting in the 18th century BC; eventually the myths of the heroes of the Trojan War and its after ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amalthea (mythology)
In Greek mythology, Amalthea or Amaltheia (Ancient Greek: Ἀμάλθεια) is the most-frequently mentioned foster-mother of Zeus. Etymology The name ''Amalthea'', in Greek "tender goddess", is clearly an epithet, signifying the presence of an earlier nurturing goddess or maiden-goddess whom the Hellenes, whose myths we know, knew to be located in Crete, where Minoans may have called her a version of "Dikte". Mythology There were different traditions regarding Amalthea. Amalthea is sometimes represented as the goat who suckled the infant-god in a cave in Cretan Mount Aigaion ("Goat Mountain"), sometimes as a goat-tending nymph of uncertain parentage (the daughter of Oceanus, Helios, Haemonius, or—according to Lactantius—Melisseus), who brought him up on the milk of her goat. The possession of multiple and uncertain mythological parents indicates wide worship of a deity in many cultures having varying local traditions. Other names, like Adrasteia, Ide, the nymph of Mount ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
USGS
The United States Geological Survey (USGS), formerly simply known as the Geological Survey, is a scientific agency of the United States government. The scientists of the USGS study the landscape of the United States, its natural resources, and the natural hazards that threaten it. The organization's work spans the disciplines of biology, geography, geology, and hydrology. The USGS is a fact-finding research organization with no regulatory responsibility. The agency was founded on March 3, 1879. The USGS is a bureau of the United States Department of the Interior; it is that department's sole scientific agency. The USGS employs approximately 8,670 people and is headquartered in Reston, Virginia. The USGS also has major offices near Lakewood, Colorado, at the Denver Federal Center, and Menlo Park, California. The current motto of the USGS, in use since August 1997, is "science for a changing world". The agency's previous slogan, adopted on the occasion of its hundredth anniv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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