Operation Clean Slate

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Satan's Fist Publisher's summary

An interstellar object is hurtling toward Earth. It isn't natural.

When astronomers detect a massive kinetic impactor on a collision course with Earth, the math is undeniable: the impact will be an extinction-level event. Humanity has eighteen months to stop it — or cease to exist.

But stopping it requires something unprecedented. Earth and Mars — two civilizations separated by millions of miles and decades of distrust — must cooperate on a mission that pushes physics, engineering, and human endurance to their absolute limits.

The science is unforgiving. The distances are real. The margins for error don't exist.

Satan's Fist is hard science fiction built on real orbital mechanics, real physics, and real consequences — the first audiobook in the Operation Clean Slate series.

©2026 MKK Publishing (P)2026 MKK Publishing
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  • Book 1

    Satan's Fist Audiobook By Mark Kennedy cover art
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