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  1. Mars 1809 — Wikipédia

    https://fr.wikipedia.org/wiki/Mars_1809

    • 1 mars, États-Unis :
    • 4 mars : début de la présidence démocrate-républicaine de James Madison aux États-Unis (fin en 1817) . Il abandonne l’Embargo Act qui asphyxiait l’économie américaine et dont on pouvait craindre qu’il ne pousse la Nouvelle-Angleterre à la sécession (Non-Intercourse Act du 1 mai) .

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  2. History of Mars observation - Wikipedia

    https://en.wikipedia.org/wiki/History_of_Mars_observation

    At its closest approach, the angular size of Mars is 25 arcseconds (a unit of degree); this is much too small for the naked eye to resolve. Hence, prior to the invention of the telescope, nothing was known about the planet besides its position on the sky. The Italian scientist Galileo Galilei was the first person known to use a telescope to make astronomical observations. His records indicate th…

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      What is the history of Mars observation?
      The history of Mars observation is about the recorded history of observation of the planet Mars. Some of the early records of Mars' observation date back to the era of the ancient Egyptian astronomers in the 2nd millennium BCE.

      History of Mars observation - Wikipedia

      en.wikipedia.org/wiki/History_of_Mars_observation
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      What did Herschel discover about Mars in 1781?
      The German-born British astronomer Sir William Herschel began making observations of the planet Mars in 1777, particularly of the planet's polar caps. In 1781, he noted that the south cap appeared "extremely large", which he ascribed to that pole being in darkness for the past twelve months.

      History of Mars observation - Wikipedia

      en.wikipedia.org/wiki/History_of_Mars_observation
      Search for: What did Herschel discover about Mars in 1781?
      What is the ancient name of Mars?
      In modern Greek, the planet retains its ancient name Ares (Aris: Άρης ). From the surface of Mars, the motions of Phobos and Deimos appear different from that of the Moon. Phobos rises in the west, sets in the east, and rises again in just 11 hours.

      Mars - Wikipedia

      en.wikipedia.org/wiki/Mars
      Search for: What is the ancient name of Mars?
      When did beer and Mädler draw the first Mars Map?
      In 1840, Mädler combined ten years of observations and drew the first map of Mars. Rather than giving names to the various markings, Beer and Mädler simply designated them with letters; Meridian Bay (Sinus Meridiani) was thus feature " a ".

      Mars - Wikipedia

      en.wikipedia.org/wiki/Mars
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    • Mars - Wikipedia

      https://en.wikipedia.org/wiki/Mars

      WebMars is a terrestrial planet with a thin atmosphere (less than 1% that of Earth's), and has a crust primarily composed of elements similar to Earth's crust, as well as a core made of …

      • Surface pressure: 0.636 (0.4–0.87) kPa, 0.00628 atm
      • Equatorial rotation velocity: 241 m/s, (870 km/h; 540 mph)
      • Average orbital speed: 24.07 km/s, (86700 km/h; 53800 mph)
      • Sidereal rotation period: 1.025957 d, 24ʰ 37ᵐ 22.7ˢ

    • 1809 – Wikipedia

      https://sv.wikipedia.org/wiki/1809
      • Mars
        1. 4 mars– James Madison efterträder Thomas Jefferson, som USA:s president . 2. 8 mars – Delar av västra armén under Georg Adlersparre beger sig från Karlstad mot Stockholm för att ta kung Gustav IV Adolf till fånga. Kungen anses oduglig, eftersom han dragit in Sverige i nederlag…
      • April
        1. 26 april – Brand i Åmål, Sverige [6].
      See more on sv.wikipedia.org
      • Ab urbe condita: 2561
      • Assyriska kalendern: 6559
      • Armeniska kalendern: 1258, ԹՎ ՌՄԾԸ
      • Gregorianska kalendern: 1809, MDCCCIX

    • Statskuppen 1809 – Wikipedia

      https://sv.wikipedia.org/wiki/Statskuppen_1809

      WebStatskuppen 1809 eller revolutionen 1809 var ett uppror mot Gustav IV Adolf. Statskuppen genomfördes av en grupp höga officerare och ämbetsmän, ofta kallade ”1809 års män”, …

    • Mars (bolygó) – Wikipédia

      https://hu.wikipedia.org/wiki/Mars_(bolygó)

      WebMars (bolygó) – Wikipédia Mars (bolygó) Ez a szócikk a bolygóról szól. Hasonló címmel lásd még: Mars (egyértelműsítő lap). A Mars felszíne a Viking leszállóegység készítette …

    • Mars - Simple English Wikipedia, the free encyclopedia

      https://simple.wikipedia.org/wiki/Mars

      WebMars - Simple English Wikipedia, the free encyclopedia Jump to content Search Create account Create account Log in Pages for logged out editors learn more Talk …

    • Category:March 1809 - Wikimedia Commons

      https://commons.wikimedia.org/wiki/Category:March_1809

      WebMarch 1809: March by year: ... In Wikipedia. Add links. This page was last edited on 2 July 2022, at 06:53. Files are available under licenses specified on their description page.

    • Mars – Wikipédia

      https://sk.wikipedia.org/wiki/Mars

      WebMars je štvrtá planéta slnečnej sústavy v poradí od Slnka. Je to druhá najmenšia planéta (po Merkúre). Pomenovaná je po Marsovi, starorímskom bohovi vojny. Jeho dráha sa …

    • Mars - Wikipedia bahasa Indonesia, ensiklopedia bebas

      https://id.wikipedia.org/wiki/Mars

      WebMars memiliki jari-jari sekitar setengah dari jari-jari Bumi. Planet ini kurang padat bila dibandingkan dengan Bumi, dan hanya mempunyai sekitar 15% volume dan 11% massa …



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