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  2. VY Canis Majoris - Wikipedia

    en.wikipedia.org/wiki/VY_Canis_Majoris

    The radius of VY CMa is 1,420 times that of the Sun (R ☉), which is close to the modelled maximum, the Hayashi limit, a volume nearly 3 billion times that of the Sun. [3] Taking this mid-point estimate as correct, an object travelling at the speed of light would take 6 hours to go around its surface, compared to 14.5 seconds for the Sun. [18 ...

  3. Numerical model of the Solar System - Wikipedia

    en.wikipedia.org/wiki/Numerical_model_of_the...

    In essence this mathematical simulation of the Solar System is a form of the N-body problem. The symbol N represents the number of bodies, which can grow quite large if one includes the Sun, 8 planets, dozens of moons, and countless planetoids, comets and so forth. However the influence of the Sun on any other body is so large, and the ...

  4. Saxon math - Wikipedia

    en.wikipedia.org/wiki/Saxon_math

    The Saxon Math 1 to Algebra 1/2 (the equivalent of a Pre-Algebra book) curriculum [3] is designed so that students complete assorted mental math problems, learn a new mathematical concept, practice problems relating to that lesson, and solve a variety of problems. Daily practice problems include relevant questions from the current day's lesson ...

  5. Position of the Sun - Wikipedia

    en.wikipedia.org/wiki/Position_of_the_Sun

    The time when the Sun transits the observer's meridian depends on the geographic longitude. To find the Sun's position for a given location at a given time, one may therefore proceed in three steps as follows: [1] [2] calculate the Sun's position in the ecliptic coordinate system, convert to the equatorial coordinate system, and

  6. File:Sun and VY Canis Majoris.svg - Wikipedia

    en.wikipedia.org/wiki/File:Sun_and_VY_Canis...

    English: Estimated size of VY Canis Majoris compared to the Sun. Español: Comparación de tamaño de nuestro sol y VY Canis Majoris . فارسی: هم‌سنجی اندازه ستاره وی‌وای سگ بزرگ با خورشید

  7. Texas Math and Science Coaches Association - Wikipedia

    en.wikipedia.org/wiki/Texas_Math_and_Science...

    There are four events in the TMSCA at the elementary, middle, and high school levels: Number Sense, General Mathematics, Calculator Applications, and General Science. Number Sense is an 80-question exam that students are given only 10 minutes to solve. Calculations can be done with a certain trick or shortcut that makes them feasible mentally. [1]

  8. Song Sun - Wikipedia

    en.wikipedia.org/wiki/Song_Sun

    Sun Song (Chinese: 孙崧; pinyin: Sūn Sōng, born in 1987) is a Chinese mathematician whose research concerns geometry and topology. A Sloan Research Fellow , he was a professor in the Department of Mathematics of the University of California, Berkeley from 2018 until 2023.

  9. Sunrise equation - Wikipedia

    en.wikipedia.org/wiki/Sunrise_equation

    This plot was created using the simple sunrise equation, approximating the sun as a single point and does not take into account effects caused by the atmosphere or the diameter of the Sun. The sunrise equation or sunset equation can be used to derive the time of sunrise or sunset for any solar declination and latitude in terms of local solar ...

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