John Karpiscak | Rymdhäst

The Horses of Olympus Mons

Available on Amazon April 14th, 2026

Mars’ tallest mountain holds a secret . . .

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Hard Sci‑Fi . . . with Hooves.

John Karpiscak writes about the near future in speculative hard science fiction where math matters, orbital mechanics bite, and “out-of-the-box solutions” succeed where high-tech falls short.

About John

Books & Series

1

Equus Astra and other Hard science fiction books (what I write about)

Explore rigorously researched spacefaring epics grounded in real physics.

2

Amazon links

Novels, novelettes, and collections set across our plausible future. Each title includes direct Amazon purchase and Kindle Unlimited options

3

Author‑goodies

More on things that interest and inspire me to write.

A dimly lit asteroid mining outpost carved into the side of a large, irregular rock, with exposed support struts and anchored processing modules clinging to the regolith. A conveyor system feeds fragmented ore toward a compact refinery whose vents emit a faint, silvery vapor that disperses into space. In the background, a dense asteroid belt stretches into the distance, each rock sharply rendered against the black void. Directional floodlights mounted along the facility cast hard-edged beams, creating pools of illumination and deep pockets of darkness. Photographic realism, framed from a low, off-axis angle to emphasize the precariousness of the installation. The overall mood is gritty, industrial, and highly believable, supporting the hard sci‑fi theme of resource extraction in deep space.

4

Preview chapters

Coming soon. Read sample chapters before committing to a full deep‑space journey.

Coming Soon . . .

News on releases, world‑building notes, and science dives.

Praise

Lena Ortiz

Physics‑driven storytelling that never forgets the human cost of leaving Earth behind.

— Aya Nakamura

Delta Reader

Every orbital transfer and engine burn feels calculated, dangerous, and utterly believable.

— Mateo García

Orbital Review

For readers who crave rigor with their wonder, these books redefine space adventure.

— Lila Patel

Visit us

Rymdhäst Publications, Online

Hours

Replies within two orbits

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