World's Most Extensive Mathematics Resource MathWorld provides a huge mathematics encyclopedia detailing the concepts of Geometry, Algebra, Calculus, Discrete Math, Number Theory, and other math topics--complete with formulas, diagrams, examples, and references for thorough understanding. Of special
Including extensive graphics, it provides thorough data regarding what various comets look like as they travel through the solar system.
Tip: Have you ever wondered what all the different file extensions mean? How about trying to figure out what extension to use? You may not even know that you are using one type that will work with one program but not another. File extensions are the three letters that come after the dot in a file name.