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In a new scientific paper a scientist argues that while the professional field of astronomy has moved away from the imperial units of miles, pounds, and degrees Fahrenheit, the transition has not been complete. It's argued the use of units such as light-years (the distance light covers in a year: 5.88 trillion miles) and astronomical units (abbreviated AU, the average Earth-Sun distance: 93 million miles) persists, when simpler logical units would help both within the subject and in multidisciplinary research. [Source: Astronomy Magazine]
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