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Cancer (constellation)

Index Cancer (constellation)

Cancer is one of the twelve constellations of the zodiac. [1]

118 relations: A-type main-sequence star, Abu Maʿshar, Akkadian Empire, Alfonsine tables, Alpha, Alpha Cancri, Ancient Greece, Ancient Rome, Anubis, Apparent magnitude, Aratus, Athanasius Kircher, Axial precession, Beehive Cluster, Beta Cancri, Binary star, BL Lacertae object, Cancer (astrology), Cancer in Chinese astronomy, Canis Minor, Chinese astronomy, Cicero, Circumstellar habitable zone, Columella, Constellation, Crab, Crayfish, Dante Alighieri, Declination, Delta Cancri, Delta Cancrids, Dionysus, DX Cancri, Edward Fomalont, Emblem, Equatorial coordinate system, Eratosthenes, Eugène Joseph Delporte, Exoplanet, Exoskeleton, Galileo Galilei, Gamma Cancri, Gas giant, Gemini (constellation), Germanic languages, Giant star, Hera, Hercules, Hipparchus, Hydra (constellation), ..., International Astronomical Union, Iota Cancri, Jakob Bartsch, Jérôme Lalande, Johann Bayer, Kannada, Labours of Hercules, Latin, Leo (constellation), Leo Minor, Lernaean Hydra, Light-year, List of most massive black holes, Lobster, Lynx (constellation), Marcus Manilius, Marcus Terentius Varro, Messier 67, North Pole, Ohio Sky Survey, OJ 287, Omega, Open cluster, Orbital period, Ovid, Plautus, Proclus, Ptolemy, QSO B0839+187, Quasar, Red dwarf, Right ascension, Sanskrit, Scarab (artifact), Scorpion, Sergei Kopeikin, Sidereal and tropical astrology, Silenus, Sinhalese language, Sirius, Sky & Telescope, Solar mass, Solstice, Speed of gravity, Square degree, Stanisław Lubieniecki, Star system, Summer solstice, Super-Earth, Supermassive black hole, Tagalog language, Tamil language, Taurus (constellation), Telescope, Telugu language, Titan (mythology), Tropic of Cancer, Vermilion Bird, Very-long-baseline interferometry, Water beetle, World Digital Library, X Cancri, YBP 1194, Zeta Cancri, Zodiac, 1,000,000,000, 55 Cancri, 60th parallel south. Expand index (68 more) »

A-type main-sequence star

An A-type main-sequence star (A V) or A dwarf star is a main-sequence (hydrogen-burning) star of spectral type A and luminosity class V. These stars have spectra which are defined by strong hydrogen Balmer absorption lines.

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Abu Maʿshar

Abu Maʿshar, Latinized as Albumasar (also Albusar, Albuxar; full name Abū Maʿshar Jaʿfar ibn Muḥammad ibn ʿUmar al-Balkhī أبو معشر جعفر بن محمد بن عمر البلخي; –, AH 171–272), was an early Persian Muslim astrologer, thought to be the greatest astrologer of the Abbasid court in Baghdad.

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Akkadian Empire

The Akkadian Empire was the first ancient Semitic-speaking empire of Mesopotamia, centered in the city of Akkad and its surrounding region, also called Akkad in ancient Mesopotamia in the Bible.

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Alfonsine tables

The Alfonsine tables (Tablas alfonsíes, tabulae alphonsinae), sometimes spelled Alphonsine tables, provided data for computing the position of the Sun, Moon and planets relative to the fixed stars.

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Alpha (uppercase, lowercase; ἄλφα, álpha, modern pronunciation álfa) is the first letter of the Greek alphabet.

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Alpha Cancri

Alpha Cancri (α Cancri, abbreviated Alpha Cnc, α Cnc), also named Acubens, is a star system in the constellation of Cancer.

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Ancient Greece

Ancient Greece was a civilization belonging to a period of Greek history from the Greek Dark Ages of the 13th–9th centuries BC to the end of antiquity (AD 600).

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Ancient Rome

In historiography, ancient Rome is Roman civilization from the founding of the city of Rome in the 8th century BC to the collapse of the Western Roman Empire in the 5th century AD, encompassing the Roman Kingdom, Roman Republic and Roman Empire until the fall of the western empire.

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Anubis (Ἄνουβις, Egyptian: jnpw, Coptic: Anoup) is the Greek name of a god associated with mummification and the afterlife in ancient Egyptian religion, usually depicted as a canine or a man with a canine head.

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Apparent magnitude

The apparent magnitude of a celestial object is a number that is a measure of its brightness as seen by an observer on Earth.

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Aratus (Ἄρατος ὁ Σολεύς; ca. 315 BC/310 BC240) was a Greek didactic poet.

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Athanasius Kircher

Athanasius Kircher, S.J. (sometimes erroneously spelled Kirchner; Athanasius Kircherus, 2 May 1602 – 28 November 1680) was a German Jesuit scholar and polymath who published around 40 major works, most notably in the fields of comparative religion, geology, and medicine.

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Axial precession

In astronomy, axial precession is a gravity-induced, slow, and continuous change in the orientation of an astronomical body's rotational axis.

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Beehive Cluster

The Beehive Cluster (also known as Praesepe (Latin for "manger"), M44, NGC 2632, or Cr 189), is an open cluster in the constellation Cancer.

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Beta Cancri

Beta Cancri (β Cancri, abbreviated Beta Cnc, β Cnc), also named Tarf, is the brightest star in the zodiacal constellation of Cancer.

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Binary star

A binary star is a star system consisting of two stars orbiting around their common barycenter.

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BL Lacertae object

A BL Lacertae object or BL Lac object is a type of galaxy with an active galactic nucleus (AGN), named after its prototype, BL Lacertae.

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Cancer (astrology)

Cancer (♋️) is the fourth astrological sign in the Zodiac, originating from the constellation of Cancer.

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Cancer in Chinese astronomy

According to traditional Chinese uranography, the modern constellation Cancer is located within the southern quadrant of the sky, which is symbolized as the Vermilion Bird of the South (南方朱雀, Nán Fāng Zhū Què).

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Canis Minor

Canis Minor is a small constellation in the northern celestial hemisphere.

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Chinese astronomy

Astronomy in China has a long history, beginning from the Shang Dynasty (Chinese Bronze Age).

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Marcus Tullius Cicero (3 January 106 BC – 7 December 43 BC) was a Roman statesman, orator, lawyer and philosopher, who served as consul in the year 63 BC.

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Circumstellar habitable zone

In astronomy and astrobiology, the circumstellar habitable zone (CHZ), or simply the habitable zone, is the range of orbits around a star within which a planetary surface can support liquid water given sufficient atmospheric pressure.

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Lucius Junius Moderatus Columella (4 – c. 70 AD) was a prominent writer on agriculture in the Roman empire.

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A constellation is a group of stars that are considered to form imaginary outlines or meaningful patterns on the celestial sphere, typically representing animals, mythological people or gods, mythological creatures, or manufactured devices.

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Crabs are decapod crustaceans of the infraorder Brachyura, which typically have a very short projecting "tail" (abdomen) (translit.

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Crayfish, also known as crawfish, crawdads, crawldads, freshwater lobsters, mountain lobsters, mudbugs or yabbies, are freshwater crustaceans resembling small lobsters, to which they are related; taxonomically, they are members of the superfamilies Astacoidea and Parastacoidea.

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Dante Alighieri

Durante degli Alighieri, commonly known as Dante Alighieri or simply Dante (c. 1265 – 1321), was a major Italian poet of the Late Middle Ages.

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In astronomy, declination (abbreviated dec; symbol δ) is one of the two angles that locate a point on the celestial sphere in the equatorial coordinate system, the other being hour angle.

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Delta Cancri

Delta Cancri (δ Cancri, abbreviated Delta Cnc, δ Cnc) is a double star approximately 180 light-years from the Sun in the constellation of Cancer.

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Delta Cancrids

The Delta Cancrids is a medium strength meteor shower lasting from December 14 to February 14, the main shower from January 1 to January 24.

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Dionysus (Διόνυσος Dionysos) is the god of the grape harvest, winemaking and wine, of ritual madness, fertility, theatre and religious ecstasy in ancient Greek religion and myth.

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DX Cancri

DX Cancri is the variable star identifier for a small star in the northern zodiac constellation of Cancer the crab.

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Edward Fomalont

Edward Fomalont (born May 14, 1940) is an American scientist working at the National Radio Astronomy Observatory.

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An emblem is an abstract or representational pictorial image that represents a concept, like a moral truth, or an allegory, or a person, like a king or saint.

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Equatorial coordinate system

The equatorial coordinate system is a celestial coordinate system widely used to specify the positions of celestial objects.

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Eratosthenes of Cyrene (Ἐρατοσθένης ὁ Κυρηναῖος,; –) was a Greek mathematician, geographer, poet, astronomer, and music theorist.

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Eugène Joseph Delporte

Eugène Joseph Delporte (10 January 1882 – 19 October 1955) was a Belgian astronomer born in Genappe.

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An exoplanet or extrasolar planet is a planet outside our solar system.

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An exoskeleton (from Greek έξω, éxō "outer" and σκελετός, skeletós "skeleton") is the external skeleton that supports and protects an animal's body, in contrast to the internal skeleton (endoskeleton) of, for example, a human.

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Galileo Galilei

Galileo Galilei (15 February 1564Drake (1978, p. 1). The date of Galileo's birth is given according to the Julian calendar, which was then in force throughout Christendom. In 1582 it was replaced in Italy and several other Catholic countries with the Gregorian calendar. Unless otherwise indicated, dates in this article are given according to the Gregorian calendar. – 8 January 1642) was an Italian polymath.

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Gamma Cancri

Gamma Cancri (γ Cancri, abbreviated Gamma Cnc, γ Cnc) is a multiple star system in the constellation of Cancer.

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Gas giant

A gas giant is a giant planet composed mainly of hydrogen and helium.

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Gemini (constellation)

Gemini is one of the constellations of the zodiac.

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Germanic languages

The Germanic languages are a branch of the Indo-European language family spoken natively by a population of about 515 million people mainly in Europe, North America, Oceania, and Southern Africa.

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Giant star

A giant star is a star with substantially larger radius and luminosity than a main-sequence (or dwarf) star of the same surface temperature.

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Hera (Ἥρᾱ, Hērā; Ἥρη, Hērē in Ionic and Homeric Greek) is the goddess of women, marriage, family, and childbirth in Ancient Greek religion and myth, one of the Twelve Olympians and the sister-wife of Zeus.

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Hercules is a Roman hero and god.

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Hipparchus of Nicaea (Ἵππαρχος, Hipparkhos) was a Greek astronomer, geographer, and mathematician.

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Hydra (constellation)

Hydra is the largest of the 88 modern constellations, measuring 1303 square degrees.

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International Astronomical Union

The International Astronomical Union (IAU; Union astronomique internationale, UAI) is an international association of professional astronomers, at the PhD level and beyond, active in professional research and education in astronomy.

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Iota Cancri

Iota Cancri (ι Cnc, ι Cancri) is a double star in the constellation Cancer approximately 300 light years from Earth.

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Jakob Bartsch

Jakob Bartsch or Jacobus Bartschius (c. 1600 – 26 December 1633) was a German astronomer.

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Jérôme Lalande

Joseph Jérôme Lefrançois de Lalande (11 July 1732 – 4 April 1807) was a French astronomer, freemason and writer.

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Johann Bayer

Johann Bayer (1572 – 7 March 1625) was a German lawyer and uranographer (celestial cartographer).

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Kannada (ಕನ್ನಡ) is a Dravidian language spoken predominantly by Kannada people in India, mainly in the state of Karnataka, and by significant linguistic minorities in the states of Andhra Pradesh, Telangana, Tamil Nadu, Maharashtra, Kerala, Goa and abroad.

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Labours of Hercules

--> The Twelve Labours of Heracles or of Hercules (ἆθλοι, hoi Hērakleous athloi) are a series of episodes concerning a penance carried out by Heracles, the greatest of the Greek heroes, whose name was later Romanised as Hercules.

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Latin (Latin: lingua latīna) is a classical language belonging to the Italic branch of the Indo-European languages.

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Leo (constellation)

Leo is one of the constellations of the zodiac, lying between Cancer the crab to the west and Virgo the maiden to the east.

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Leo Minor

Leo Minor is a small and faint constellation in the northern celestial hemisphere.

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Lernaean Hydra

The Lernaean Hydra or Hydra of Lerna (Λερναῖα Ὕδρα, Lernaîa Hýdra), more often known simply as the Hydra, was a serpentine water monster in Greek and Roman mythology.

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The light-year is a unit of length used to express astronomical distances and measures about 9.5 trillion kilometres or 5.9 trillion miles.

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List of most massive black holes

This is an ordered list of the most massive black holes so far discovered (and probable candidates), measured in units of solar masses, or the mass of the Sun (approx. kilograms).

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Lobsters comprise a family (Nephropidae, sometimes also Homaridae) of large marine crustaceans.

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Lynx (constellation)

Lynx is a constellation named after the animal, usually observed in the northern sky.

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Marcus Manilius

Marcus Manilius (fl. 1st century AD) was a Roman poet, astrologer, and author of a poem in five books called Astronomica.

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Marcus Terentius Varro

Marcus Terentius Varro (116 BC – 27 BC) was an ancient Roman scholar and writer.

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Messier 67

Messier 67 (also known as M67 or NGC 2682) is an open cluster in the constellation of Cancer.

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North Pole

The North Pole, also known as the Geographic North Pole or Terrestrial North Pole, is (subject to the caveats explained below) defined as the point in the Northern Hemisphere where the Earth's axis of rotation meets its surface.

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Ohio Sky Survey

The Ohio Sky Survey was an astronomical survey of extragalactic radio sources.

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OJ 287

OJ 287 is a BL Lac object located 3.5 billion light-years away that has produced quasi-periodic optical outbursts going back approximately 120 years, as first apparent on photographic plates from 1891.

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Omega (capital: Ω, lowercase: ω; Greek ὦ, later ὦ μέγα, Modern Greek ωμέγα) is the 24th and last letter of the Greek alphabet.

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Open cluster

An open cluster is a group of up to a few thousand stars that were formed from the same giant molecular cloud and have roughly the same age.

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Orbital period

The orbital period is the time a given astronomical object takes to complete one orbit around another object, and applies in astronomy usually to planets or asteroids orbiting the Sun, moons orbiting planets, exoplanets orbiting other stars, or binary stars.

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Publius Ovidius Naso (20 March 43 BC – 17/18 AD), known as Ovid in the English-speaking world, was a Roman poet who lived during the reign of Augustus.

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Titus Maccius Plautus (c. 254 – 184 BC), commonly known as Plautus, was a Roman playwright of the Old Latin period.

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Proclus Lycaeus (8 February 412 – 17 April 485 AD), called the Successor (Greek Πρόκλος ὁ Διάδοχος, Próklos ho Diádokhos), was a Greek Neoplatonist philosopher, one of the last major classical philosophers (see Damascius).

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Claudius Ptolemy (Κλαύδιος Πτολεμαῖος, Klaúdios Ptolemaîos; Claudius Ptolemaeus) was a Greco-Roman mathematician, astronomer, geographer, astrologer, and poet of a single epigram in the Greek Anthology.

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QSO B0839+187

QSO B0839+187 (PKS 0839+187) is a quasar that was used to measure the speed of gravity in VLBI experiment conducted by Edward Fomalont and Sergei Kopeikin in September 2002.

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A quasar (also known as a QSO or quasi-stellar object) is an extremely luminous active galactic nucleus (AGN).

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Red dwarf

A red dwarf (or M dwarf) is a small and relatively cool star on the main sequence, of M spectral type.

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Right ascension

Right ascension (abbreviated RA; symbol) is the angular distance measured only eastward along the celestial equator from the Sun at the March equinox to the (hour circle of the) point above the earth in question.

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Sanskrit is the primary liturgical language of Hinduism; a philosophical language of Hinduism, Sikhism, Buddhism and Jainism; and a former literary language and lingua franca for the educated of ancient and medieval India.

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Scarab (artifact)

Scarabs were popular amulets and impression seals in Ancient Egypt.

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Scorpions are predatory arachnids of the order Scorpiones.

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Sergei Kopeikin

Sergei Kopeikin (born April 10, 1956) is a USSR-born theoretical physicist presently living and working in the United States, where he holds the position of Professor of Physics at the University of Missouri in Columbia, Missouri.

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Sidereal and tropical astrology

Sidereal and tropical are astrological terms used to describe two different definitions of a year.

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In Greek mythology, Silenus (Greek: Σειληνός Seilēnos) was a companion and tutor to the wine god Dionysus.

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Sinhalese language

Sinhalese, known natively as Sinhala (සිංහල; siṁhala), is the native language of the Sinhalese people, who make up the largest ethnic group in Sri Lanka, numbering about 16 million.

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Sirius (a romanization of Greek Σείριος, Seirios,."glowing" or "scorching") is a star system and the brightest star in the Earth's night sky.

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Sky & Telescope

Sky & Telescope (S&T) is a monthly American magazine covering all aspects of amateur astronomy, including the following.

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Solar mass

The solar mass is a standard unit of mass in astronomy, equal to approximately.

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A solstice is an event occurring when the Sun appears to reach its most northerly or southerly excursion relative to the celestial equator on the celestial sphere.

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Speed of gravity

In classical theories of gravitation, the changes in a gravitational field propagate.

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Square degree

A square degree (deg2) is a non-SI-compliant unit measure of solid angle.

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Stanisław Lubieniecki

Stanisław Lubieniecki (Stanislaus de Lubienietz, also Lubiniezky or Lubyenyetsky) (August 23, 1623 in Raków – May 18, 1675 in Hamburg) was a Polish Socinian theologist, historian, astronomer, and writer.

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Star system

A star system or stellar system is a small number of stars that orbit each other, bound by gravitational attraction.

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Summer solstice

The summer solstice (or estival solstice), also known as midsummer, occurs when one of the Earth's poles has its maximum tilt toward the Sun.

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A super-Earth is an extrasolar planet with a mass higher than Earth's, but substantially below the masses of the Solar System's ice giants, Uranus and Neptune, which have masses of 15 and 17 times Earth's, respectively.

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Supermassive black hole

A supermassive black hole (SMBH or SBH) is the largest type of black hole, on the order of hundreds of thousands to billions of solar masses, and is found in the centre of almost all currently known massive galaxies.

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Tagalog language

Tagalog is an Austronesian language spoken as a first language by a quarter of the population of the Philippines and as a second language by the majority.

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Tamil language

Tamil (தமிழ்) is a Dravidian language predominantly spoken by the Tamil people of India and Sri Lanka, and by the Tamil diaspora, Sri Lankan Moors, Burghers, Douglas, and Chindians.

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Taurus (constellation)

Taurus (Latin for "the Bull") is one of the constellations of the zodiac, which means it is crossed by the plane of the ecliptic.

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A telescope is an optical instrument that aids in the observation of remote objects by collecting electromagnetic radiation (such as visible light).

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Telugu language

Telugu (తెలుగు) is a South-central Dravidian language native to India.

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Titan (mythology)

In Greek mythology, the Titans (Greek: Τιτάν, Titán, Τiτᾶνες, Titânes) and Titanesses (or Titanides; Greek: Τιτανίς, Titanís, Τιτανίδες, Titanídes) were members of the second generation of divine beings, descending from the primordial deities and preceding the Olympians.

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Tropic of Cancer

The Tropic of Cancer, also referred to as the Northern Tropic, is the most northerly circle of latitude on Earth at which the Sun can be directly overhead.

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Vermilion Bird

The Vermilion bird is one of the Four Symbols of the Chinese constellations.

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Very-long-baseline interferometry

Very-long-baseline interferometry (VLBI) is a type of astronomical interferometry used in radio astronomy.

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Water beetle

A water beetle is a generalized name for any beetle that is adapted to living in water at any point in its life cycle.

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World Digital Library

The World Digital Library (WDL) is an international digital library operated by UNESCO and the United States Library of Congress.

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X Cancri

X Cancri is a semiregular variable star located in the constellation Cancer.

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YBP 1194

YBP 1194 is a G-type main-sequence star, class G5V, in the open cluster M67 in the constellation Cancer.

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Zeta Cancri

Zeta Cancri (ζ Cancri, abbreviated Zeta Cnc, ζ Cnc) is a multiple star system in the constellation of Cancer.

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The zodiac is an area of the sky that extends approximately 8° north or south (as measured in celestial latitude) of the ecliptic, the apparent path of the Sun across the celestial sphere over the course of the year.

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1,000,000,000 (one billion, short scale; one thousand million or milliard, yard, long scale) is the natural number following 999,999,999 and preceding 1,000,000,001.

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55 Cancri

55 Cancri (abbreviated 55 Cnc) is a binary star approximately 41 light-years away from the Sun in the constellation of Cancer.

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60th parallel south

The 60th parallel south is a circle of latitude that is 60 degrees south of the Earth's equatorial plane.

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Redirects here:

Cancer (Constellation), Cancer (astronomy), Cancer constalation, Cancer constellation, Carcinos, Carcinus (mythology), Constellation Cancer, Karkinos, ♋ (Constellation), ♋ (constellation).


[1] https://en.wikipedia.org/wiki/Cancer_(constellation)

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