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  1. Wikipedia is written by volunteer editors and hosted by the Wikimedia Foundation, a non-profit organization that also hosts a range of other volunteer projects : Commons. Free media repository. MediaWiki. Wiki software development.

  2. › wiki › SunSun - Wikipedia

    The Sun is the star at the center of the Solar System. It is a massive, hot ball of plasma, inflated and heated by energy produced by nuclear fusion reactions in its core. Part of this energy is emitted from its surface as visible light, ultraviolet, and infrared radiation, providing most of the energy for life on Earth. The Sun has been an ...

    • ≈4.6 billion years (4.6×10⁹ years)
    • Solar (/ˈsoʊlər/)
    • −26.74
    • 1.9885×10³⁰ kg, 332,950 Earths
  3. › wiki › PiPi - Wikipedia

    The number π (/paɪ/; spelled out as "pi") is a mathematical constant that is the ratio of a circle's circumference to its diameter, approximately equal to 3.14159. The number π appears in many formulae across mathematics and physics. It is an irrational number, meaning that it cannot be expressed exactly as a ratio of two integers, although ...

  4. Fibonacci sequence. A tiling with squares whose side lengths are successive Fibonacci numbers: 1, 1, 2, 3, 5, 8, 13 and 21. In mathematics, the Fibonacci sequence is a sequence in which each number is the sum of the two preceding ones. Numbers that are part of the Fibonacci sequence are known as Fibonacci numbers, commonly denoted Fn .

  5. › wiki › EarthEarth - Wikipedia

    Etymology The Modern English word Earth developed, via Middle English, from an Old English noun most often spelled eorðe. It has cognates in every Germanic language, and their ancestral root has been reconstructed as *erþō.In its earliest attestation, the word eorðe was used to translate the many senses of Latin terra and Greek γῆ gē: the ground, its soil, dry land, the human world ...

  6. Baby Reindeer. Baby Reindeer is a British dark comedy [1] [2] drama - thriller miniseries created by and starring Richard Gadd, adapted from Gadd's autobiographical one-man show of the same name. Directed by Weronika Tofilska and Josephine Bornebusch, it also stars Jessica Gunning, Nava Mau and Tom Goodman-Hill .

  7. Albert Einstein ( / ˈaɪnstaɪn / EYEN-styne; [4] German: [ˈalbɛɐt ˈʔaɪnʃtaɪn] ⓘ; 14 March 1879 – 18 April 1955) was a German-born theoretical physicist who is widely held to be one of the greatest and most influential scientists of all time. Best known for developing the theory of relativity, Einstein also made important ...