The Invention of Star Luminosity Mapping to Measure Immense Distances in Space

Henrietta Leavitt, a brilliant scientist who worked at the Harvard Observatory discovered the true size of the universe because of her ability to objectively measure the true brightness of stars. Leavitt became enamored and fascinated by a type of star referred to as a “cepheid variable” which means a “star which pulses within the night sky”. Leavitt’s revolutionary breakthrough occurred when she realized that the intensity of brightness is precisely linked to how quick or slow at which the star blinks. If 2 points of light blink at the same rate but with different intensities, it would stand to reason that the brighter star is closer to the observer than the dimmer one. This allowed Leavitts to measure the distance to stars which lay far beyond the reaches of parallax distance

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