Open Cluster.

Beta-reader. Receive a new PDF chapter each week in March and April, provide feedback, and get a credit in the acknowledgements for your valuable help.

PLUS signed, personalized gratitude message, and numbered (6-25) hardcover copy of 'Astronomy Saves the World'. 6"x9" backcloth with foil stamping and full color gloss dustcover. PLUS #astworld 7-pack of stickers. PLUS full PDF text emailed directly to you once editing is complete.

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