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FreeAstroScience logo with a glowing star, open book, and Earth on a space-themed circular badge with the tagline Igniting Curiosity for free astronomy science education

FreeAstroScience

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    • AstroPhysics
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    • Exploration
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Why Does Gravity’s Constant G Still Baffle Science After 225 Years?

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Was Einstein Wrong About Quantum Reality?

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Will Jet Fuel Shortages Ground Your Summer Holiday?

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Why Has Physics Gone Quiet Since the 1970s?

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Math

    What are the Borromean rings?

    Gerd DaniOctober 25, 2021March 28, 20260

    Borromean rings are a set of three interlinked, simple closed curves in three-dimensional space. If any one of the three…

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      What is a Gabriel’s horn?

      Gerd DaniOctober 11, 2021March 28, 20260

      Gabriel’s horn is a particular geometric figure that has infinite surface area but finite volume. The name refers to the…

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        What is an Algorithm?

        Gerd DaniOctober 3, 2021March 28, 20260

        Algorithm is a finite sequence of well-defined, computer-implementable instructions, typically to solve a class of specific problems or to perform…

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          What is the Golden spiral?

          Gerd DaniSeptember 20, 2021March 28, 20260

          Golden spiral is a logarithmic spiral whose growth factor is φ, the golden ratio. That is, a golden spiral gets…

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            What is the Bernoulli process?

            Gerd DaniSeptember 13, 2021March 28, 20260

            Bernoulli process is a finite or infinite sequence of binary random variables, so it is a discrete-time stochastic process that…

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              What is the Riemann hypothesis?

              Gerd DaniSeptember 13, 2021March 28, 20260

              Riemann hypothesis is a conjecture that the Riemann zeta function has its zeros only at the negative even integers and…

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                What is the Singularity theory?

                Gerd DaniSeptember 8, 2021March 28, 20260

                 Singularity theory explores the realms of spaces that slightly deviate from being manifolds. A practical example is a piece of…

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                  The notion of Orientability

                  Gerd DaniAugust 11, 2021March 28, 20260

                  Orientability is a property of surfaces in Euclidean space that measures whether it is possible to make a consistent choice…

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                    What Is Pi?

                    Gerd DaniMarch 14, 2021March 28, 20260

                    Pi is a constant describing the ratio between a circle’s circumference and its diameter. It is an irrational number usually…

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                      What does “statistically significant” mean?

                      Gerd DaniMarch 4, 2021March 28, 20260

                      In recent times, the internet has been abuzz with individuals sharing research related to numerous aspects of COVID. While this…

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