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  2. Proper motion - Wikipedia

    en.wikipedia.org/wiki/Proper_motion

    For most stars seen in the sky, the observed proper motions are small and unremarkable. Such stars are often either faint or are significantly distant, have changes of below 0.01″ per year, and do not appear to move appreciably over many millennia. A few do have significant motions, and are usually called high-proper motion stars.

  3. Moving average - Wikipedia

    en.wikipedia.org/wiki/Moving_average

    Smoothing of a noisy sine (blue curve) with a moving average (red curve). In statistics, a moving average (rolling average or running average or moving mean [1] or rolling mean) is a calculation to analyze data points by creating a series of averages of different selections of the full data set.

  4. Astrological progression - Wikipedia

    en.wikipedia.org/wiki/Astrological_progression

    Astrological progression is a part of what is usually called predictive astrology, the claim of astrology to predict or forecast future trends and developments. Most astrologers nowadays regard the term 'prediction' as something of a misnomer, as modern astrology does not claim to directly predict future events as such.

  5. Threefold repetition - Wikipedia

    en.wikipedia.org/wiki/Threefold_repetition

    and then Fischer wrote his next move 34. Qe2 (third time) ½-½. on his scoresheet, which is the third appearance of the position with Black to move, and he claimed a draw. [12] At first Petrosian was not aware of what was going on. Incidentally, this was the first time a draw by threefold repetition had been claimed in his career.

  6. Distance from a point to a line - Wikipedia

    en.wikipedia.org/wiki/Distance_from_a_point_to_a...

    The distance (or perpendicular distance) from a point to a line is the shortest distance from a fixed point to any point on a fixed infinite line in Euclidean geometry.It is the length of the line segment which joins the point to the line and is perpendicular to the line.

  7. Your Body Fat Percentage Can Be a Way to Measure Your Health

    www.aol.com/lifestyle/body-fat-percentage-way...

    The next most common is the electric impedance measurement of body fat percentage, a calculation many home scales can now do (but the accuracy is significantly affected by hydration status).

  8. Algebraic notation (chess) - Wikipedia

    en.wikipedia.org/wiki/Algebraic_notation_(chess)

    Algebraic notation. Algebraic notation is the standard method for recording and describing the moves in a game of chess.It is based on a system of coordinates to uniquely identify each square on the board. [1]

  9. How to Calculate Gas Costs for Your Next Road Trip - AOL

    www.aol.com/calculate-gas-costs-next-road...

    The post How to Calculate Gas Costs for Your Next Road Trip appeared first on Reader's Digest. Find out how much gas you'll use on your next road trip and get tips on saving money on gas prices.