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- Comets!
Comets!
Angebote / Angebote:
JANUARY 2014 STOP PRESS A practical guide to the history and science of comets from a well-known amateur astronomer, including tips and techniques on how to observe and image them. It is published on the eve of comet ISON, which may be the biggest and most spectacular comet in Earth's skies for many decades.
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