
A mining outpost carved into the Tycho crater has become the unlikely stage for a baffling lunar tremor. When chief engineer Bill Bonwitt feels the moon itself shudder, he and his radio operator Crane scramble to understand a sudden three‑and‑a‑half‑degree shift that snaps the Earth back into place as though the satellite were on a rampage. The incident rattles the base, toppling equipment and injuring a mysterious worker whose name appears on the payroll but whose past is a blank.
Amid the chaos, simmering tensions surface: a demanding supervisor suspects sabotage, while the crew wrestles with the eerie data pouring in from Earth’s observatories. The story blends hard‑won technical detail with a growing sense of unease, hinting at forces far beyond the miners’ control. Listeners are drawn into a claustrophobic, high‑stakes world where every tremor could be the first clue to a deeper mystery lurking beneath the moon’s surface.
Language
en
Duration
~36 minutes (34K characters)
Publisher of text edition
Project Gutenberg
Credits
Greg Weeks, Mary Meehan and the Online Distributed Proofreading Team at http://www.pgdp.net
Release date
2021-03-14
Rights
Public domain in the USA.

1893–1968
Best known from the early science-fiction pulps, this engineer-turned-writer filled his stories with planetary adventure, strange inventions, and the big imaginative sweep that shaped genre magazines between the wars.
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