<ul><li>NASA uses pi to fifteen decimal places for the highest precision calculations, such as interplanetary navigation.</li><li>Going into any greater precision is unnecessary as it would result in a negligible error, demonstrated by calculating the circumference of a circle with a radius equal to the distance between Earth and Voyager 1 spacecraft.</li><li>Calculating pi to a much greater precision, such as 10 trillion digits, is possible but lacks practical significance.</li><li>NASA's use of fifteen decimal places is sufficient for their requirements.</li></ul>

Why NASA Only Needs Pi To So Many Decimal Places

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