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79360 Sila–Nunam
79360 Sila–Nunam, provisional designation , is a cold classical Kuiper belt object (cubewano) and binary asteroid, binary system made up of components of almost equal size, called Sila and Nunam, orbiting beyond Neptune in the Solar System. The name of the system is the combined names of the two bodies, Sila and Nunam.Sila–Nunam Mutual Events (Lowell) Discovery Sila–Nunam was discovered on 4 February 1997 by Jane X. Luu, David C. Jewitt, Chad Trujillo, and Jun Chen (astronomer), Jun Chen at the Mauna Kea Observatory, Hawaii, and given the provisional designation . It was resolved as a binary system in Hubble Space Telescope, Hubble observations of 22 October 2002 by Denise C. Stephens and Keith S. Noll and announced on 5 October 2005. Name |
Hubble Space Telescope
The Hubble Space Telescope (often referred to as HST or Hubble) is a space telescope that was launched into low Earth orbit in 1990 and remains in operation. It was not the first space telescope, but it is one of the largest and most versatile, renowned both as a vital research tool and as a public relations boon for astronomy. The Hubble telescope is named after astronomer Edwin Hubble and is one of NASA's Great Observatories. The Space Telescope Science Institute (STScI) selects Hubble's targets and processes the resulting data, while the Goddard Space Flight Center (GSFC) controls the spacecraft. Hubble features a mirror, and its five main instruments observe in the ultraviolet, visible, and near-infrared regions of the electromagnetic spectrum. Hubble's orbit outside the distortion of Earth's atmosphere allows it to capture extremely high-resolution images with substantially lower background light than ground-based telescopes. It has recorded some of the most detaile ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neptune
Neptune is the eighth planet from the Sun and the farthest known planet in the Solar System. It is the fourth-largest planet in the Solar System by diameter, the third-most-massive planet, and the densest giant planet. It is 17 times the mass of Earth, and slightly 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. It is referred to as one of the solar system's two ice giant planets (the other one being Uranus). Being composed primarily of gases and liquids, it has no well-defined "solid surface". The planet orbits the Sun once every 164.8 julian year (astronomy), years at an average distance of . It is named after the Neptune (mythology), Roman god of the sea and has the astronomical symbol , representing Neptune's trident. Neptune is not visible to the unaided eye and is the only planet in the Solar System found by mathematical prediction ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Far-infrared
Far infrared (FIR) is a region in the infrared spectrum of electromagnetic radiation. Far infrared is often defined as any radiation with a wavelength of 15 micrometers (μm) to 1 mm (corresponding to a range of about 20 THz to 300 GHz), which places far infrared radiation within the CIE IR-B and IR-C bands. The long-wave side of the FIR spectrum overlaps with so named terahertz radiation. A.Glagoleva-Arkadiewa. (1924). "Short Electromagnetic Waves of wave-length up to 82 Microns". ''Nature'' 2844 113. do10.1038/113640a0/ref> Different sources use different boundaries for the far infrared; for example, astronomers sometimes define far infrared as wavelengths between 25 μm and 350 μm. Visible light includes radiation with wavelengths between 400 nm and 700 nm, meaning that far infrared photons have tens to hundreds of times less energy than visible light photons. Applications Astronomy Due to black-body radiation, objects with temper ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mean-motion Resonance
In celestial mechanics, orbital resonance occurs when orbiting bodies exert regular, periodic gravitational influence on each other, usually because their orbital periods are related by a ratio of small integers. Most commonly, this relationship is found between a pair of objects (binary resonance). The physical principle behind orbital resonance is similar in concept to pushing a child on a swing, whereby the orbit and the swing both have a natural frequency, and the body doing the "pushing" will act in periodic repetition to have a cumulative effect on the motion. Orbital resonances greatly enhance the mutual gravitational influence of the bodies (i.e., their ability to alter or constrain each other's orbits). In most cases, this results in an ''unstable'' interaction, in which the bodies exchange momentum and shift orbits until the resonance no longer exists. Under some circumstances, a resonant system can be self-correcting and thus stable. Examples are the 1:2:4 resonance ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ergative Case
In grammar, the ergative case (abbreviated ) is the grammatical case that identifies the noun as the agent of a transitive verb in ergative–absolutive languages. Characteristics In such languages, the ergative case is typically marked (most salient), while the absolutive case is unmarked. Recent work in case theory has vigorously supported the idea that the ergative case identifies the agent (the intentful performer of an action) of a verb (Woolford 2004). In Kalaallisut (Greenlandic) for example, the ergative case is used to mark subjects of transitive verbs and possessors of nouns. This syncretism with the genitive is commonly referred to as the ''relative'' case. Nez Perce has a three-way nominal case system with both ergative (''-nim'') and accusative (''-ne'') plus an absolute (unmarked) case for intransitive subjects: ''hipáayna qíiwn'' ‘the old man arrived’; ''hipáayna wewúkiye'' ‘the elk arrived’; ''wewúkiyene péexne qíiwnim'' ‘the old man saw an e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Inuktitut
Inuktitut (; , syllabics ; from , "person" + , "like", "in the manner of"), also Eastern Canadian Inuktitut, is one of the principal Inuit languages of Canada. It is spoken in all areas north of the tree line, including parts of the provinces of Newfoundland and Labrador, Quebec, to some extent in northeastern Manitoba as well as the Northwest Territories and Nunavut. It is one of the aboriginal languages written with Canadian Aboriginal syllabics. It is recognised as an official language in Nunavut alongside Inuinnaqtun, and both languages are known collectively as ''Inuktut''. Further, it is recognized as one of eight official native tongues in the Northwest Territories. It also has legal recognition in Nunavik—a part of Quebec—thanks in part to the James Bay and Northern Quebec Agreement, and is recognised in the Charter of the French Language as the official language of instruction for Inuit school districts there. It also has some recognition in Nunatsiavut—the Inui ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Iñupiaq Language
Iñupiaq Iñupiaq : , Inupiaq, Iñupiat , Inupiat, Iñupiatun or Alaskan Inuit is an Inuit language, or perhaps languages, spoken by the Iñupiat people in northern and northwestern Alaska, as well as a small adjacent part of the Northwest Territories of Canada. The Iñupiat language is a member of the Inuit-Yupik-Unangan language family, and is closely related to, but not mutually intelligible with, other Inuit languages of Canada and Greenland. There are roughly 2,000 speakers. Iñupiaq is considered to be a threatened language, with most speakers at or above the age of 40. Iñupiaq is an official language of the State of Alaska, along with several other indigenous languages. The major varieties of the Iñupiaq language are the North Slope Iñupiaq and Seward Peninsula Iñupiaq dialects. The Iñupiaq language has been in decline since contact with English in the late 19th century. American territorial acquisition and the legacy of boarding schools have created a situation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Silap Inua
In Inuit religion, Silap Inua ('possessor of spirit', ᓯᓚᑉ ᐃᓄᐊ) or Silla ('breath, spirit', ᓯᓪᓚ) is similar to mana or ether, the primary component of everything that exists; it is also the breath of life and the method of locomotion for any movement or change. Silla was believed to control everything that goes on in one's life. Description Silla is a spirit of the sky, the wind, and the weather. Though identified as male, he is never depicted, and thought to be formless. There are very few myths in which Silla is a character, because he is not thought to have many personality characteristics. He also represents a concept somewhat akin to the Hindu idea of Paramatman, or Emerson’s idea of the great Over soul: Silla is also believed to be the substance which souls are made of. Contrary to the Christian missionaries who have identified Nanook the polar bear spirit as the supreme deity of the Inuit, Silla is much closer to this role. However Silla also has a som ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Inuit Religion
Inuit religion is the shared spiritual beliefs and practices of the Inuit, an Indigenous peoples of the Americas, indigenous people from Alaska, northern Canada, parts of Siberia and Greenland. Their religion shares many similarities with some Alaska Native religions. Traditional Inuit religious practices include animism and shamanism, in which spiritual healers mediate with spirits. Today many Inuit follow Christianity, but traditional Inuit spirituality continues as part of a living, oral tradition and part of contemporary Inuit society. Inuit who balance indigenous and Christian theology practice religious syncretism. Inuit cosmology provides a narrative about the world and the place of people within it. Rachel Qitsualik-Tinsley writes: Traditional stories, rituals, and taboos of the Inuit are often precautions against dangers posed by their harsh Arctic environment. Knud Rasmussen asked his guide and friend Aua (angakkuq), Aua, an ''angakkuq'' (spiritual healer), about Inuit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Keith S
Keith may refer to: People and fictional characters * Keith (given name), includes a list of people and fictional characters * Keith (surname) * Keith (singer), American singer James Keefer (born 1949) * Baron Keith, a line of Scottish barons in the late 18th century * Clan Keith, a Scottish clan associated with lands in northeastern and northwestern Scotland Places Australia * Keith, South Australia, a town and locality Scotland * Keith, Moray, a town ** Keith railway station * Keith Marischal, East Lothian United States * Keith, Georgia, an unincorporated community * Keith, Ohio, an unincorporated community * Keith, West Virginia, an unincorporated community * Keith, Wisconsin, a ghost town * Keith County, Nebraska Other uses * Keith F.C., a football team based in Keith, Scotland * , a ship of the British Royal Navy * Hurricane Keith, a 2000 hurricane that caused extensive damage in Central America * ''Keith'' (film), a 2008 independent film directed by Todd Kessler * ' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Denise C , a given name
{{disambiguation ...
Denise may refer to: * Denise (given name), people with the given name ''Denise'' * Denise (computer chip), a video graphics chip from the Amiga computer * "Denise" (song), a 1963 song by Randy & the Rainbows * Denise, Mato Grosso, a municipality in Brazil * ''Denise'', an 1885 play by Alexander Dumas ''fils'' * SP-350 Denise, a small submarine also known as the "Diving saucer" * A brand name of desogestrel See also * Hurricane Denise, a list of tropical cyclones named Denise * Saint Denise (other) *Denice (other) *Denyse Denyse is a feminine given name, and may be seen as a variant of Denise. Notable people with the name include: *Denyse Alexander (born 1931), British actress *Denyse Benoit, Canadian actress, director and screenwriter *Denyse Floreano (born 1976) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mauna Kea Observatory
The Mauna Kea Observatories (MKO) are a group of independent astronomical research facilities and large telescope observatories that are located at the summit of Mauna Kea on the Big Island of Hawaiʻi, United States. The facilities are located in a 525-acre (212 ha) special land use zone known as the "Astronomy Precinct", which is located within the 11,228-acre (4,544 ha) Mauna Kea Science Reserve. The Astronomy Precinct was established in 1967 and is located on land protected by the Historical Preservation Act for its significance to Hawaiian culture. The presence and continued construction of telescopes is highly controversial due to Mauna Kea's centrality in native Hawaiian religion and culture, as well as for a variety of environmental reasons. The location is near ideal because of its dark skies from lack of light pollution, good astronomical seeing, low humidity, high elevation of , position above most of the water vapor in the atmosphere, clean air, good weath ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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