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Name of Mars
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In English, the planet Mars is named after Mars, the Roman god of war,[1] an association made because of its red color, which suggests blood.[2] The adjectival form of Latin Mars is Martius,[3] from which the English word Martian derives, used as an adjective or for a putative inhabitant of Mars, and Martial, used as an adjective corresponding to Terrestrial for Earth.[4] In Greek, the planet is known as Ἄρης Arēs, with the inflectional stem Ἄρε- Are-.[5] That is because of the Greek equivalent to Mars is Ares. From this come technical terms such as areology, as well as the (rare) adjective Arean[6] and the star name Antares.

Mars is also the basis of the name of the month of March (from Latin Martius mēnsis 'month of Mars'),[7] as well as of Tuesday (Latin dies Martis 'day of Mars'), where the old Anglo-Saxon god Tíw was identified as the Anglo-Saxon equivalent to Mars by Interpretatio germanica.[8]

Due to the global influence of European languages in astronomy, a word like Mars or Marte for the planet is common around the world, though it may be used alongside older, native words. A number of other languages have provided words with international usage. For example:

  • Arabic مريخ ايب mirrīkh – which connotes fire – is used as the (or a) name for the planet in Persian, Urdu, Malay and Swahili,[9] among others
  • Chinese 火星 [Mandarin Huǒxīng] 'fire star' (in Chinese the five classical planets are identified with the five elements) is used in Korean, Japanese and Vietnamese.[10]
  • India uses the Sanskrit term Mangal derived from the Hindu god Mangala.[11]
  • A long-standing nickname for Mars is the "Red Planet". That is also the planet's name in Hebrew, מאדים ma'adim, which is derived from אדום adom, meaning 'red'.[12]
  • The archaic Latin form Māvors (/ˈmeɪvɔːrz/) is seen, but only very rarely, in English, though the adjectives Mavortial and Mavortian mean 'martial' in the military rather than planetary sense.[13]

References

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Name of Mars

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The planet Mars, the fourth from the Sun, derives its English name from the Roman god of war, a designation adopted by ancient Romans due to the planet's distinctive reddish hue, which evoked associations with blood and conflict. This coloration results from iron-rich minerals in the Martian soil that oxidize, or , giving the world its enduring nickname as the "Red Planet." In , the planet was known as , after the god of war, reflecting a similar thematic link to its appearance and erratic motion across the sky. Across other ancient cultures, Mars received names emphasizing its fiery red glow or martial qualities. The ancient called it Her Desher, meaning "the red one," highlighting its visual prominence. In Hebrew tradition, it is termed Ma’adim (מַאֲדִים), translating to "reddening" or "blushing," a direct reference to the planet's color observed in the . The ancient Chinese named it Yinghuo (熒惑), or "flickering puzzler," alluding to its irregular path that seemed to confound early astronomers, though modern Chinese usage favors Huoxing (火星), meaning "fire star," in line with elemental associations. In Indian Vedic culture, Mars is known as (मङ्गल), signifying "auspicious" or "beneficent," but also as Kuja or Angaraka, evoking its red, coal-like (angara) appearance and role as a symbol of energy, courage, and conflict in . These diverse traditions underscore Mars' universal since antiquity, influencing calendars, mythology, and even days of the week—such as , derived from the Norse god Tyr, equated with the . The planet's thus blend astronomical with cultural symbolism, persisting into modern scientific standardized by the .

Etymology and Mythological Origins

Roman God Mars

In ancient Roman religion, Mars was revered as the god of war, agriculture, and protection of the state, embodying both martial prowess and fertility. Originally an Italic deity associated with vegetation, cattle, and boundaries, Mars functioned primarily as an agricultural guardian in archaic Rome, as evidenced by rituals like the suovetaurilia sacrifice described by Cato in De Agri Cultura, where he was invoked to protect crops and livestock. Over time, particularly during the Republic, his character evolved to emphasize warfare, reflecting Rome's growing military identity, though he retained his protective and paternal roles as a "father" (pater) of the Roman people. The name "Mars" derives from the Latin Mārs (stem Mawort-), with roots in Proto-Italic *Mārs and connections to the Oscan form Māmers, suggesting an indigenous Italic origin rather than a direct Indo-European ; some scholars propose links to an earlier Mavors, denoting a youthful warrior figure. Unlike the more chaotic Greek counterpart , who represented unbridled destruction, Mars was viewed positively as a disciplined protector who ensured and , second only to in the Roman pantheon. This duality is highlighted in his epithets, such as Mars Gradivus ("the strider" or marcher into battle) and Mars Pater ("Mars the Father"), underscoring his role in both conflict and renewal. A central myth portrays Mars as the father of , the legendary founders of , conceived through his union with the , as recounted by in (1.4); this narrative positioned Mars as the divine progenitor of the Roman state, linking martial valor to the city's origins. His festivals marked the agricultural and military cycles, including the Armilustrium on , a purification rite for arms honoring Mars as war god, and the October Horse sacrifice on October 15, where a horse's head was offered at the to ensure fertility and victory. Other observances, like the Equirria horse races in and , further blended his agrarian and bellicose aspects. Mars's attributes typically included a and , symbolizing his readiness for battle and defense, often depicted alongside a and military cloak in and iconography. These elements distinguished him from by emphasizing strategic protection over mere violence, aligning with Rome's self-image as a disciplined empire-builder. As a foundational , Mars received dedicated priesthoods, such as the Flamen Martialis, and sacred sites like the , reinforcing his integral place in Roman religious and civic life.

Greek and Other Indo-European Equivalents

In , embodies the savage aspects of war, characterized by bloodlust, violence, and chaos, in contrast to more strategic deities like . He is depicted as the son of and , often portrayed as a bearded warrior armed with a and , symbolizing raw force and the horrors of battle. Key myths highlight ' tumultuous nature, such as his adulterous affair with , the goddess of love, which led to their entrapment in a magical net crafted by her husband , exposing them to ridicule among the Olympian gods (, Odyssey 8.266–366). In 's , actively participates in the on the side of the Trojans, only to be wounded by the Greek hero with 's assistance and flee to Olympus in agony, underscoring his vulnerability and impulsive rage (, 5.855–909). These narratives, drawn from Homeric epics, portray as a figure of unrestrained brutality rather than heroic valor. The of "" is derived from the Greek word ἀρή (arē), meaning "bane" or "ruin". This linguistic distinction reflects broader conceptual shifts in Indo-European war deities, where Ares lacks the protective, orderly connotations of his Roman counterpart. Among other Indo-European equivalents, the Hindu god Mangala serves as a war deity closely associated with the planet Mars, embodying martial energy, courage, and planetary command in Hindu astrological traditions. , often depicted as a red-hued born of the Bhūmi, governs initiative and conflict, mirroring Mars' celestial identification while integrating themes of vitality and destruction in texts like the Purāṇas. Similarly, the Norse god Týr (or Tiwaz in Proto-Germanic) functions as a one-handed war god linked to victory, justice, and assemblies, equated by Roman interpreters like with Mars due to his role in oaths and martial prowess (, Germania 9). Týr's sacrifice of his hand to bind the wolf exemplifies his commitment to cosmic order through heroic endurance. These Indo-European figures reveal cultural divergences in war divinity: is consistently shown as chaotic and reviled even by his fellow gods for his mindless fury, whereas evolved into a disciplined patron of the state and legions under Hellenistic influences, where Roman adoption of Greek traits merged with indigenous Italic traditions.

Historical Names Across Cultures

Ancient Near Eastern Designations

In ancient Mesopotamian astronomy, particularly among the Babylonians, the planet Mars was identified as the "star of " (MULdNER.GAL), named after the god , who embodied , plague, , and the . This association appears prominently in the compendium, a foundational astronomical and astrological text compiled around 1000 BCE during the late second millennium, which cataloged celestial bodies and their divine correspondences. Nergal's fierce attributes mirrored the planet's erratic motion and vivid red hue, often interpreted as a harbinger of destruction in omens. Assyrian and Akkadian traditions retained this linkage, with Mars also called ṣalbatānu, meaning "the burning one" or "the fiery one," emphasizing its scorching appearance in the night sky. In cuneiform inscriptions, the planet was denoted by determinatives like MUL ŠALBATÁNU or MUL ŠI.PA ("red star"), and in some astronomical tablets, it featured a pyramid-shaped symbol representing its stellar and divine status. Babylonian astronomers recorded detailed observations of Mars, including the earliest known documentation of its retrograde motion—where the planet appears to reverse direction against the fixed stars—dating to the 7th century BCE, as seen in diaries from the reign of Nebuchadnezzar II (c. 604–591 BCE). These records, preserved on clay tablets, highlighted Mars' irregular path, which spanned up to 80 days per cycle and informed predictive models for eclipses and omens. In ancient , Mars bore the name " the Red" (ḥr-dšr) or "Horus-Desher," directly tying its prominent reddish color to the falcon-headed god , symbolizing protection and kingship amid cosmic strife with the chaos deity Set. This designation, attested in lists and ceiling paintings from temples like (Ptolemaic period, but rooted in earlier traditions), portrayed Mars as a vigilant wanderer on the horizon, akin to Horus surveying the sky for threats. Egyptian observers noted the planet's distinct hue as a divine marker, though their records focused more on its periodic visibility than precise mechanics, integrating it into stellar calendars for ritual timing. These Near Eastern designations for Mars, blending astral theology with empirical observation, exerted influence on subsequent Greek nomenclature through Hellenistic exchanges in the region.

East Asian and Indian Traditions

In ancient East Asian astronomy, particularly within Chinese tradition, the planet Mars was known as Yinghuo (熒惑), meaning "flickering puzzler" or "shimmering deluder," alluding to its irregular path and retrograde motion that puzzled early observers. This name is documented in astronomical observations attributed to Shi Shen during the 4th century BCE, where Mars was cataloged among the five visible planets and associated with omens of fire, drought, and military strife, underscoring its fiery red essence in early celestial records. The modern Chinese term is Huoxing (火星), or "fire star," directly referencing the planet's reddish coloration. In Indian Vedic and astrological contexts, Mars bears the names Angaraka or Kuja, both signifying "burning coal" or "ember," again alluding to its reddish appearance as a symbol of intense heat and energy. These appellations link the planet to the deity (also known as Skanda), the god of war, or alternatively to , embodying martial vigor and vitality in . Within Jyotisha, the classical system of Indian astrology, Mars governs a planetary period known as Mangala Dasha, lasting seven years in the Vimshottari system, during which its influences on courage, conflict, and physical drive are said to manifest prominently in an individual's life. Japanese and Korean naming conventions for Mars stem from classical Chinese astronomical influence. Historically, they adopted terms derived from Yinghuo, but from the Tang dynasty (618–907 CE) onward, equivalents of the modern Huoxing were integrated, such as Kasei (火星) in Japanese and Hwaseong (화성) in Korean, both meaning "fire star." These were incorporated into East Asian imperial calendars, where Chinese star catalogs shaped official timekeeping and almanacs across the region. Across these traditions, Mars carries malefic implications, often viewed as a harbinger of disruption. In the Chinese wu xing (five phases) framework, it aligns with the fire element, symbolizing the south direction, summer season, and the color , while portending events like warfare or natural calamities when prominent in omens. Similarly, in Indian horoscopy, Mars is considered a natural malefic , its placement potentially causing , which is believed to affect marital harmony and provoke conflicts or accidents related to aggression and vitality.

Adoption in Astronomy

Ancient Astronomical Usage

In Hellenistic astronomy, Greek scholars such as (c. 190–120 BCE) identified the reddish wandering star as the planet associated with , the god of war, due to its distinctive bloody hue and erratic retrograde motion that evoked martial unpredictability. This linkage built on earlier Babylonian observations, where the planet was tied to , a of destruction and fire, but the Greeks systematized it within their geocentric framework, cataloging planetary positions against . By the 2nd century CE, incorporated this nomenclature into his comprehensive geocentric model in the Almagest, designating the planet as (later Latinized as Mars), the next wanderer after the Sun, following the Moon, Mercury, , and the Sun in orbital sequence. employed epicyclic models—deferents with attached epicycles—to account for Mars' observed irregularities, including its retrograde loops, achieving predictive accuracy for its positions over centuries through and observational data refined from . Medieval Islamic astronomers preserved and advanced these traditions, adopting the al-Mirrikh, meaning "the red one" or "fiery," for the in works like those of (973–1050 CE), who detailed its motions in his Mas'udic Canon (al-Qanun al-Mas'udi), bridging Ptolemaic models to the European Renaissance via translations and (astronomical tables). 's treatise integrated Greek and Indian influences, computing planetary parameters with high precision and emphasizing empirical verification, which facilitated the transmission of Mars' and models to Latin scholars in the . Key observations underpinning these names included Mars' synodic period of approximately 780 days—the interval between successive oppositions, when it appears brightest and closest to —noted by ancient Chaldeans in goal-year texts tracking 37 such periods over 79 years, a cycle later adopted by Greek astronomers for predictive ephemerides. Chaldean records from the 5th–2nd centuries BCE documented Mars' opposition brightness and reddish intensity, interpreting its variability as omens, while like quantified these phenomena to refine orbital theories without altering the established divine association.

Modern Scientific Naming

In his 1543 treatise De revolutionibus orbium coelestium, Nicolaus Copernicus systematically employed the Latin name "Mars" to denote the planet then considered the fourth from the Sun in his heliocentric model, integrating it seamlessly into calculations of planetary motion and latitudes. This usage marked a key step in standardizing classical nomenclature within the emerging framework of Renaissance astronomy. The retention of "Mars" persisted through the telescopic era of the 17th and 18th centuries, as astronomers documented new details without altering the planetary designation. In 1659, Christiaan Huygens produced the first precise sketches of Mars' surface markings, such as Syrtis Major, while consistently referring to the body as Mars in his observational records. Similarly, in 1666, Giovanni Domenico Cassini identified the planet's polar caps during systematic viewings and calculated its rotation period of approximately 24 hours and 37 minutes, upholding the traditional name amid these revelations. The (IAU), established in , formalized by affirming "Mars" as the official English designation for the planet, with direct equivalents like "Mars" in French and German adopted internationally to ensure consistency in scientific communication. This resolution built on prior conventions, positioning the IAU as the authoritative body for such standards. During the space age, "Mars" became central to mission nomenclature and literature, exemplified by NASA's Mariner program, which achieved the first successful flybys in 1964 and 1969, yielding close-range images that deepened understanding of the planet's geology. The tradition endures in recent endeavors, such as the Perseverance rover mission launched in 2020, which investigates Mars' habitability and collects samples under the longstanding planetary name.

Symbol and Iconography

Development of the Mars Symbol

The astronomical symbol for Mars, ♂, a circle intersected by an arrow pointing northeast, first appears in texts from , dating to the 3rd–6th centuries CE. These early forms preserved in Byzantine codices represent and of the Roman god Mars, emblematic of his attributes as the deity of . The glyph's design thus draws directly from mythological , symbolizing martial prowess and the planet's reddish hue evocative of . In medieval alchemy, the symbol gained prominence as the designation for iron, the metal astrologically linked to Mars due to its hardness, reddish rust, and association with weaponry and fortitude. This usage is evident in Arabic alchemical treatises from the , including works attributed to (Geber) in the , where planetary symbols denoted metallic essences and their purported influences on earthly and cosmic processes. The connection reinforced alchemical theories of correspondence between celestial bodies and materials, with iron embodying Mars' fiery, combative qualities. The symbol's adoption in astronomy solidified during the , appearing in printed ephemerides such as those compiled by in the 1470s, where it standardized planetary notations alongside zodiac signs and lunar data. By the early , it featured prominently in Johannes Kepler's Tabulae Rudolphinae (1627), the influential astronomical tables that integrated Tycho Brahe's observations and Kepler's elliptical orbits, ensuring the glyph's widespread use in scientific computations. Early variations depicted the symbol with subtler arrow strokes or cross-like elements, but it evolved into its precise modern form— a clear with a diagonal —by the 18th century in European astronomical almanacs.

Contemporary Representations

In contemporary astronomy, the name "Mars" and its ♂ remain standard in software and databases for generating and tracking orbital data. The International Astronomical Union's (IAU) system designates the planet as "Mars" for all feature naming and data catalogs, ensuring consistency in global scientific communication. Similarly, 's (JPL) Horizons system uses "Mars" as the primary target identifier (major body 499) and incorporates the ♂ in outputs for ephemeris computations, allowing researchers to query precise positions, velocities, and observational parameters. Space exploration programs continue to employ "Mars" in their branding to highlight international efforts toward the planet. The European Space Agency's (ESA) ExoMars program, spanning 2016 to 2028, explicitly references Mars in its title—short for Exobiology on Mars—to denote missions investigating the planet's atmosphere and surface, including the Trace Gas Orbiter launched in 2016 and the Rosalind Franklin rover scheduled for 2028. China's Tianwen-1 mission, launched in 2020, while officially named after a classical poem meaning "Questions to Heaven," is internationally recognized as a Mars exploration effort, combining an orbiter, lander, and rover to study the planet's geology and atmosphere under the global "Mars" nomenclature. In , the name Mars evokes themes of and , notably in science fiction. The 2015 film The Martian, directed by and based on Andy Weir's novel, portrays an astronaut's isolation on Mars, emphasizing resourcefulness amid the planet's harsh environment and grossing over $630 million worldwide to underscore public fascination with Mars colonization. Digital representations extend to emojis, where Unicode's ♂ (U+2642) serves dual purposes as the male gender symbol and the astronomical emblem for Mars, while the ringed planet emoji 🪐 (U+1FA90) is often adapted in contexts to represent Mars alongside other worlds, bridging astronomical and cultural iconography. As of 2025, 's Moon to Mars architecture integrates Mars-focused analogs into the , simulating long-duration missions to prepare for human exploration of the Red Planet through initiatives like the Crew Health and Performance Exploration Analog (CHAPEA). These efforts emphasize global collaboration via the , signed by 60 nations as of November 2025, which promote shared principles for sustainable Mars activities, including a May 2025 workshop on non-interference protocols hosted by the .

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