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Earth, Sun and Moon
Science for nine- to 11-year-olds. Programme journeying back to ancient Greece and considering what evidence there was then for a spherical earth. Thousands of years later, Nicolaus Copernicus had the groundbreaking idea that the earth travels round the sun, but it was Galileo Galilei who proved it.
Last on
Fri 5 Jun 2009
11:30
主播大秀 Two Wales (Analogue)
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How do we know the Earth is spherical?
Duration: 02:12
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How do we know the Earth is spherical? (signed)
Duration: 02:14
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Copernicus and Galileo 鈥� the movement of the Earth (signed)
Duration: 04:55
