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Parallax to Measure the Distance to a Near Star
Scientists have been able to use parallax to massively fill out our celestial map with the help of a space observatory. To unlock this boss level of a space measurement, you actually need two different locations on earth. And since we have this scale that kepler gave us, we could measure the distance to the sun. This is huge, because when we get the exact distance to venus using this parallax method, we instantly know the distances to all the other planets.