Physics, asked by surajnayak097656, 8 months ago

Define the following units light year parsec astronomical unit

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Answered by bhoomikasanjeev2009

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A light year is the distance light travels in a year. ... And an astronomical unit is the average distance between the earth and the sun. So the distance to the sun is by definition one AU. A parsec is the distance at which one astronomical unit subtends an angle of one second of arc.

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