Huge product rangeOver 140,000 books & equipment products
Rapid shippingUK & Worldwide
Pay in £, € or U.S.$By card, cheque, transfer, draft
Exceptional customer serviceGet specialist help and advice
Reveals that, as recorded in mythology and tree rings, the earth has had five major encounters with comets, in 2345 BC, 1628 BC, 1159 BC and AD 540.