Neptune is the eighth and farthest known planet from the Sun in the Solar System. In the Solar System, it is the fourth-largest planet by diameter, the third-most-massive planet, the densest giant planet. Neptune is 17 times the mass of Earth more massive than its near-twin Uranus. Neptune is denser and physically smaller than Uranus because its greater mass causes more gravitational compression of its atmosphere. Neptune orbits the Sun once every 164.8 years at an average distance of 30.1 au. It is named after the Roman god of the sea and has the astronomical symbol ♆, a stylised version of the god Neptune's trident. Neptune is not visible to the unaided eye and is the only planet in the Solar System found by mathematical prediction rather than by empirical observation. Unexpected changes in the orbit of Uranus led Alexis Bouvard to deduce that its orbit was subject to gravitational perturbation by an unknown planet; the position of Neptune was subsequently calculated from Bouvard's observations, independently, by John Couch Adams and Urbain Le Verrier after his death.
Neptune was subsequently observed with a telescope on 23 September 1846 by Johann Galle within a degree of the position predicted by Le Verrier. Its largest moon, was discovered shortly thereafter, though none of the planet's remaining 13 known moons were located telescopically until the 20th century; the planet's distance from Earth gives it a small apparent size, making it challenging to study with Earth-based telescopes. Neptune was visited by Voyager 2, when it flew by the planet on 25 August 1989; the advent of the Hubble Space Telescope and large ground-based telescopes with adaptive optics has allowed for additional detailed observations from afar. Like Jupiter and Saturn, Neptune's atmosphere is composed of hydrogen and helium, along with traces of hydrocarbons and nitrogen, though it contains a higher proportion of "ices" such as water and methane. However, similar to Uranus, its interior is composed of ices and rock. Traces of methane in the outermost regions in part account for the planet's blue appearance.
In contrast to the hazy featureless atmosphere of Uranus, Neptune's atmosphere has active and visible weather patterns. For example, at the time of the Voyager 2 flyby in 1989, the planet's southern hemisphere had a Great Dark Spot comparable to the Great Red Spot on Jupiter; these weather patterns are driven by the strongest sustained winds of any planet in the Solar System, with recorded wind speeds as high as 2,100 km/h. Because of its great distance from the Sun, Neptune's outer atmosphere is one of the coldest places in the Solar System, with temperatures at its cloud tops approaching 55 K. Temperatures at the planet's centre are 5,400 K. Neptune has a faint and fragmented ring system, discovered in 1984 later confirmed by Voyager 2; some of the earliest recorded observations made through a telescope, Galileo's drawings on 28 December 1612 and 27 January 1613 contain plotted points that match up with what is now known to be the position of Neptune. On both occasions, Galileo seems to have mistaken Neptune for a fixed star when it appeared close—in conjunction—to Jupiter in the night sky.
At his first observation in December 1612, Neptune was stationary in the sky because it had just turned retrograde that day. This apparent backward motion is created; because Neptune was only beginning its yearly retrograde cycle, the motion of the planet was far too slight to be detected with Galileo's small telescope. In 2009, a study suggested that Galileo was at least aware that the "star" he had observed had moved relative to the fixed stars. In 1821, Alexis Bouvard published astronomical tables of the orbit of Neptune's neighbour Uranus. Subsequent observations revealed substantial deviations from the tables, leading Bouvard to hypothesise that an unknown body was perturbing the orbit through gravitational interaction. In 1843, John Couch Adams began work on the orbit of Uranus using the data, he requested extra data from Sir George Airy, the Astronomer Royal, who supplied it in February 1844. Adams produced several different estimates of a new planet. In 1845–46, Urbain Le Verrier, independently of Adams, developed his own calculations but aroused no enthusiasm in his compatriots.
In June 1846, upon seeing Le Verrier's first published estimate of the planet's longitude and its similarity to Adams's estimate, Airy persuaded James Challis to search for the planet. Challis vainly scoured the sky throughout September. Meanwhile, Le Verrier by letter urged Berlin Observatory astronomer Johann Gottfried Galle to search with the observatory's refractor. Heinrich d'Arrest, a student at the observatory, suggested to Galle that they could compare a drawn chart of the sky in the region of Le Verrier's predicted location with the current sky to seek the displacement characteristic of a planet, as opposed to a fixed star. On the evening of 23 September 1846, the day Galle received the letter, he discovered Neptune just northeast of Phi Aquarii, 1° from where Le Verrier had predicted it to be, about 12° from Adams' prediction, on the border of Aquarius and Capricornus according to the modern IAU constellation boundaries. Challis realised that he had observed the planet twice, on 4 and 12 August, but did not recognise it as a planet because he lacked an up-to-date star map and was distra
St. Ignatius of Loyola University is a private university located in Lima, part of a group of educational institutions founded in 1995 by former Peruvian Vice President Raúl Diez Canseco, along with an institute and two schools, its Undergraduate Programme consists of 8 schools and 33 careers, though it does have a Graduate Programme. USIL has a strong focus on entrepreneurship and hospitality management, consistent with its mission statement, "to shape competent entrepreneurial professionals who are responsible and capable of performing both domestically and internationally"; the first campus is named after Fernando Belaúnde Terry, President of Peru from 1963 to 1968 and from 1980 to 1985. It is the campus, first built upon the university's founding and has a capacity of about 4000 students. Besides classrooms its facilities include at least the following: Laboratories Cafeteria Reading and research centres Deans' and other administrative offices TV and radio studios Library Don Ignacio Restaurant The second campus is named after Miguel Grau Seminario, Peruvian naval hero from the War of the Pacific.
It has eight floors of classrooms and houses the Graduate Programme, offices of Junior Achievement Peru, further administrative offices, a cafeteria, student centres and the university's book store. It is being expanded to encompass at least two more buildings to accommodate the increase of students in recent years; the university's Undergraduate Programme consists of 8 schools and 33 careers, with strong focuses on business, culinary arts and hospitality management, but featuring other programmes as well. Architecture and Territory The School of Business is the oldest in USIL and has the most majors, with eight careers: Business Entrepreneurship and Business Development Economics Economics and Finance Economics and International Business Corporate Environmental Management International Business Marketing Law International Relations Initial Education Bilingual Intercultural Initial Education Bilingual Intercultural Primary Education The School of Hospitality Management and Gastronomy focuses on hospitality management, tourism management, culinary arts, gastronomy, has its own building on USIL's first campus, called Hall E, housing specific facilities for the use of its students, such as mock hotel rooms, kitchens.
Hall E is shared with the Culinary Arts School, a different programme, as well as Don Ignacio Restaurant Agroindustrial and Business Engineering Industrial and Comercial Engineering Systems Engineering and Information Civil Engineering Business Engineering Food Industrial Engineering Logistics and Transport Engineering Environmental Engineering Mechanical Engineering Health Management Nutrition and Diet
Edgewater is a census-designated place in Anne Arundel County, United States. The population was 9,023 at the 2010 census. Edgewater is considered a suburb of Annapolis due to its proximity and development in the area; the area is increasing with retail and residential development. Edgewater is part of the southern portion of Anne Arundel County. Londontown, South River Colony, Glebe Heights and Edgewater Beach are some of the neighborhoods found in Edgewater. Maryland Route 2 is the main north-south road through the community lined with businesses and residential developments, leading north across the South River Bridge to Annapolis and south to Prince Frederick and beyond. Maryland Route 214 intersects MD 2 and forms the southern boundary of the CDP leading east to the communities of Beverly Beach and Mayo. Maryland Route 253 curves through the center of the CDP in the Londontown neighborhood connecting Routes 2 and 214. Lee Airport is a general aviation airport in Edgewater. Edgewater is served by Anne Arundel County Public Schools.