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Portable Network Graphic  |  1996-04-23  |  7KB  |  242x277  |  8-bit (42 colors)
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OCR: YEAR ..................... . . . . . . . . . . . . . . . . . . . A PLANET'S YEAR is the time it takes to complete one orbit around the Sun. The exact length depends on the method of measurement: the Earth's solar year, which is measured according to the position of the Sun, is 365 days, 5 hours, 48 minutes, and 45 seconds long; the sidereal year, which is measured according to the position of the stars, is 20 minutes and 10 seconds longer.