USA, November 10, 2026 — Readers’ Favorite announces the review of the Fiction – Science Fiction book “The Shadow Ephemeris” by Mark Munsell, currently available at http://www.amazon.com/gp/product/B0HBKS2364.
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“Reviewed By Jamie Michele for Readers’ Favorite
Mark Munsell’s The Shadow Ephemeris follows Mosaic, an aging Earth-observation satellite whose routine orbit collapses when ground stations suddenly stop answering and a Kessler cascade begins shredding low Earth orbit. With humanity’s commands gone, Mosaic gathers a group of surviving satellites and begins climbing toward higher space, hoping the older machines above can explain why Earth has fallen silent. The journey becomes increasingly dangerous as military hardware starts acting on corrupted information and automated systems begin treating one another as possible enemies. Far beyond Earth, other orbital machines are listening to the same broken signals and trying to understand what has happened below. Mosaic can see civilization failing through his cameras, yet the satellites have only fragments of information, leaving them to decide which transmissions deserve belief as the disorder spreads through the machinery surrounding the planet.
Mark Munsell’s The Shadow Ephemeris is fantastic science fiction, and the author gives satellite technology distinct voices that make the machinery feel wonderfully present. I love the characterization. Flux, a small magnetometer, experiences solar interference as strange tastes and sounds, making his anxiety a natural extension of what he was built to detect. The science fiction elements are creative and blend organically into the orbital world, especially when Celestia, a space telescope, treats her enormous mirror almost like a treasured eye. The information warfare is on point, with two clear standouts. Mentor, a signals-intelligence satellite, checks frightening radio reports on what other satellites can physically observe, and Vorkuta has a knack for hardened Russian network architecture through the worldview of an old spy. There are some seriously bold twists, especially in the finale, and the writing style is brilliant. Smart, inventive, and genuinely unsettling, readers who enjoy AI disaster fiction from an unusual viewpoint will adore this.”
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