All articles starting with H
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Heshan, Hunan
Heshan District (赫山区) is a district of Yiyang City, Hunan, China, created in 1994 from Yiyang County; 1,278.7 km², about 858,400 residents, GDP 75.8 billion yuan (2025), distinct from Heshan City, Guangdong.
Heshana Qaghan
Heshana Qaghan, also known as Chuluo Khagan and born Ashina Daman, was the second khagan of the Western Turkic Khaganate from about 604 to 611.
Heshen
Heshen (和珅) was a Manchu official of the Qing dynasty who rose to grand secretary under the Qianlong Emperor and was forced to take his own life in 1799.
Heshen's Downfall and Death
Heshen's Downfall and Death (和珅赐死案) was the 1799 arrest, conviction on twenty counts of crime, and forced suicide of the Qing grand councillor He Shen.
Heshen's fall and purge
Heshen's fall and purge (和珅之獄) was the arrest, trial, and forced suicide of grand secretary and chief Grand Councilor Heshen in 1799, days after the Qianlong Emperor's death.
Heshilie clan
The Heshilie clan (纥石烈氏) was a Jurchen clan of the Liao and Jin periods that took its surname from a tribe of the same name and ranked among the noble consort clans of Jin.
Heshui Shale Oil Field
The Heshui Shale Oil Field is a shale and tight oil development in the Ordos Basin in Gansu Province, China, operated by PetroChina's Changqing Oilfield Company from the Triassic Chang 7 member.
Heshun Confederation
Heshun Confederation (和顺公司), also styled the Fourteen Companies of Heshun, was a federation of fourteen Chinese gold-mining kongsis at Montrado in West Borneo, formed in 1776.
Heshuyuan power station
Heshuyuan power station (梅县荷树园发电厂) is a 1,470 MW coal-fired power station in Meizhou, Guangdong, China, owned by Guangdong Baolihua Electric Power and known for burning coal gangue waste.
Hesiod (Mercurian crater)
Hesiod is an IAU-approved impact crater on Mercury, named in 1976 after the Greek poet, about 100-107 km wide at 58.5 degrees south. Its rim depressions are interpreted as pyroclastic volcanic vents seen by MESSENGER; distinct from the lunar crater Hesiodus.
Hesiod (Ἡσίοδος)
Hesiod (Ἡσίοδος), early Greek epic poet of Ascra in Boeotia, around 700–650 BCE, author of the Theogony and Works and Days, the earliest systematic Greek accounts of the gods' origins and of moral and practical instruction.
Hesiodic poetry
Hesiodic poetry is the early Greek epic verse attributed to Hesiod, a Boeotian poet of the eighth or early seventh century BCE, including the Theogony and Works and Days.
Hesitancy of micturition
Hesitancy of micturition, also called urinary hesitancy or urinary hesitation, is a delay or difficulty in starting urination, classified as a symptom rather than a disease.
Hesitant fuzzy sets
A hesitant fuzzy set assigns each element a set of possible membership degrees instead of one, letting evaluators express hesitation. Vicenç Torra introduced it in 2009.
Hesitation Marks
Hesitation Marks is Nine Inch Nails' 2013 album on Columbia Records, produced by Trent Reznor with Atticus Ross and Alan Moulder; first NIN album in five years, 14 tracks, Metascore 77, Grammy-nominated for Best Alternative Music Album.
Heska Corporation
Heska Corporation was a veterinary diagnostics and specialty products company based in Loveland, Colorado, founded in 1988 as Paravax and acquired by Mars, Incorporated in June 2023.
Hesketh Racing
Hesketh Racing, British Formula One team (1973-1978) founded by Lord Alexander Fermor-Hesketh with 'Bubbles' Horsley, gave James Hunt his F1 debut and won the 1975 Dutch GP at Zandvoort, its only victory.
Hesperetin
Hesperetin is a flavanone of the flavonoid class that occurs naturally in citrus fruits and is best known as the aglycone of hesperidin, the predominant flavonoid in lemons and oranges.
Hesperia Dorsa
Hesperia Dorsa is an IAU-approved (1991) system of wrinkle ridges, compressional folds over blind thrust faults, in Hesperia Planum, Mars; about 818 km across, centered near 23°S 113°E, with two orthogonal NE- and NW-striking ridge sets.
Hesperia Planum
Hesperia Planum is a large ridged volcanic plain in Mars's southern highlands, northeast of the Hellas basin, defining the base of the Hesperian period about 3.7 billion years ago.
Hesperian (Mars)
The Hesperian is the middle of Mars's three geologic epochs, spanning roughly 3.7 to 3.0 billion years ago and marked by outflow channels carved by catastrophic floods.
Hesperides (Ἑσπερίδες)
The Hesperides (Ἑσπερίδες) are Greek nymphs of evening who guard Hera's garden of golden apples in the far west, protected by the dragon Ladon and sought by Heracles in his eleventh labor, their number and parentage varying by source.
Hesperides Rupes
Hesperides Rupes, a 374 km escarpment (rupes) on Mercury near the equator in quadrangle H-08, IAU-approved in 2023 and named for the Spanish research vessel Hesperides.
Hesperidin
Hesperidin, also known as cirantin, is a flavanone glycoside and the predominant polyphenol in citrus fruits, first isolated from orange peel by Lebreton in 1828.
Hesperiidae
Hesperiidae, the skipper butterflies, is a worldwide butterfly family of over 4,100 species in about 570 genera, marked by hooked antennae, stout bodies, and rapid flight; formerly superfamily Hesperioidea, now within Papilionoidea with seven subfamilies.
Hesperis matronalis
Hesperis matronalis, dame's rocket or dame's violet, is a Eurasian biennial mustard with fragrant four-petaled purple or white flowers, widely naturalized and invasive in North America, attacked by the weevil Ceutorhynchus inaffectatus, and often confused with five-petaled garden phlox.
Hesperocyparis
Hesperocyparis (western cypresses) is a Cupressaceae genus published in 2009 for New World species formerly in Cupressus; 17 accepted species, native western North America to Central America, origin ~39.2 Ma.
Hesperornis
Hesperornis, type genus of the Hesperornithiformes, a large flightless toothed diving seabird from the Late Cretaceous Western Interior Seaway of North America, discovered by O.C. Marsh in Kansas in 1870; swam with powerful hind legs, ate fish and squids, nested on land.
Hesperus Tholus
Hesperus Tholus is a 135-km-diameter tholus (domal feature) on Mars at 37.56S, 138.72E, named for the classical albedo feature Hesperus and approved by the IAU on August 18, 2020.
Hess (lunar crater)
Hess is a 90.44-km-wide impact crater on the Moon's far side at 54.47°S, 174.19°E, named by the IAU in 1970 for physicist Victor Franz Hess and geologist Harry Hammond Hess.