Pullman, author of the His Dark Materials trilogy, holds a copy of its concluding volume, The Amber Spyglass. The first book of a new series will be published in Fall 2017. Max Nash/Associated Press hide caption

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Max Nash/Associated Press

Author Philip Pullman Announces A Follow-Up Trilogy To 'His Dark Materials'

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Science has been working to shed light on the nature of the Universe for 400 years. Alberto Pomares/iStockphoto.com hide caption

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Alberto Pomares/iStockphoto.com