Abstract
The only planets known before the invention of the telescope were Mercury, Venus, Mars, Jupiter and Saturn. For centuries scholars thought that the Solar System consisted of just these five planets plus the Earth, the Sun and the Moon. Then, in 1781, the academic world received a rude shock when an amateur astronomer discovered another planet with his home-made reflecting telescope!
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© 1997 Springer-Verlag London Limited
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North, G. (1997). The Twilight Zone of the Solar System. In: Astronomy Explained. Springer, London. https://doi.org/10.1007/978-1-4471-0901-3_11
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DOI: https://doi.org/10.1007/978-1-4471-0901-3_11
Publisher Name: Springer, London
Print ISBN: 978-3-540-76136-5
Online ISBN: 978-1-4471-0901-3
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