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Astronomy and references

Warrior Worlds is an independent series. These volumes contain astronomy and references; character stories and interpretations are reserved for the author.

Numerical values retain the NASA composite snapshot dated 25 September 2026. Linked studies document source-specific methods and uncertainties. Calculated values, limits and minimum masses are identified. The illustrations do not establish moons, local landscapes or life.

The edited jackets carry the Warrior Worlds identity and its own volume numbering. Jacket artwork is editorial imagery, excluded from planetary scene counts.

Kepler-16 b · A Planet with Two Suns

The image uses an invented moon as its viewing platform. The large parent planet and two stellar lights express the real binary architecture, while the satellite, atmospheric sky and apparent arrangement are illustrative. All depicted life and technology are fictional.

  1. NASA Exoplanet Archive · Kepler-16 b · composite snapshot, 25 September 2026
  2. Doyle et al. 2011
  3. Complete measurements, uncertainties & source provenance

TRAPPIST-1 e · An Earth-sized World in a Compact System

The pictured ground and atmosphere are speculative. A size close to Earth’s does not establish an Earth-like ocean, air pressure or climate. All depicted life and technology are fictional.

  1. NASA Exoplanet Archive · TRAPPIST-1 e · composite snapshot, 25 September 2026
  2. Agol et al. 2021
  3. Complete measurements, uncertainties & source provenance

Kepler-34 b · Orbiting a Binary Star

The orbital room is fictional. Its window offers an illustrative view of the binary setting; the displayed stellar phases and apparent sizes are not an ephemeris calculation. All depicted life and technology are fictional.

  1. NASA Exoplanet Archive · Kepler-34 b · composite snapshot, 25 September 2026
  2. Welsh et al. 2012
  3. Complete measurements, uncertainties & source provenance

HD 45364 b · A Planet Found in Stellar Motion

The ice moon in the artwork is invented. Radial-velocity detection does not provide an image of the planet’s clouds, a moon census or a surface map. All depicted life and technology are fictional.

  1. NASA Exoplanet Archive · HD 45364 b · composite snapshot, 25 September 2026
  2. Li et al. 2022
  3. Calculated Value
  4. Complete measurements, uncertainties & source provenance

Kepler-47 c · The Outer World of Kepler-47

The atmospheric habitat is fictional. Gas clouds, lighting and any protective structure shown here are extrapolations rather than resolved observations. All depicted life and technology are fictional.

  1. NASA Exoplanet Archive · Kepler-47 c · composite snapshot, 25 September 2026
  2. Orosz et al. 2019
  3. Complete measurements, uncertainties & source provenance

Proxima Cen b · A Nearby World, Indirectly Measured

The surface and sky are imagined. Neither a minimum mass near Earth’s nor the planet’s orbital distance establishes breathable air, a particular terrain or liquid surface water. All depicted life and technology are fictional.

  1. NASA Exoplanet Archive · Proxima Cen b · composite snapshot, 25 September 2026
  2. Suárez Mascareño et al. 2025
  3. Calculated Value
  4. Complete measurements, uncertainties & source provenance

Kepler-1647 b · A Long Orbit Around Two Stars

The atmospheric moon is a fictional vantage. A moon’s existence, orbital stability and local weather would require evidence and modeling beyond the discovery of its parent planet. All depicted life and technology are fictional.

  1. NASA Exoplanet Archive · Kepler-1647 b · composite snapshot, 25 September 2026
  2. Kostov et al. 2016
  3. Complete measurements, uncertainties & source provenance

55 Cnc e · A Year Shorter Than a Day

The enclosed orbital viewpoint is invented. Visible surface texture, molten regions and the spectrum transmitted by a protective window are not determined by the catalog’s bulk parameters. All depicted life and technology are fictional.

  1. NASA Exoplanet Archive · 55 Cnc e · composite snapshot, 25 September 2026
  2. Bourrier et al. 2018
  3. Complete measurements, uncertainties & source provenance

HD 128311 c · The Limits of a Distant Planet Portrait

The moon and planetary rings in the artwork are invented. The mass of a known giant does not establish that it possesses the particular satellite or ring architecture shown. All depicted life and technology are fictional.

  1. NASA Exoplanet Archive · HD 128311 c · composite snapshot, 25 September 2026
  2. McArthur et al. 2014
  3. Calculated Value
  4. Complete measurements, uncertainties & source provenance

Kepler-35 b · A Giant in a Two-Star System

The depicted moon and its atmosphere are fictional. Two real host stars justify the theme of two-source lighting, but not the image’s exact stellar separation, disk sizes or shadows. All depicted life and technology are fictional.

  1. NASA Exoplanet Archive · Kepler-35 b · composite snapshot, 25 September 2026
  2. Welsh et al. 2012
  3. Complete measurements, uncertainties & source provenance

HD 80606 b · An Extremely Eccentric Orbit

The observer’s eclipse and orbital shelter are invented. The epoch, trajectory and geometry required to hide the stellar disk have not been solved for this illustration. All depicted life and technology are fictional.

  1. NASA Exoplanet Archive · HD 80606 b · composite snapshot, 25 September 2026
  2. Pearson et al. 2022
  3. Complete measurements, uncertainties & source provenance

LHS 1140 b · Measuring a Temperate Super-Earth

The mineral plain is speculative. A measured radius and a favorable irradiation regime do not establish this surface, its pressure or its weather. All depicted life and technology are fictional.

  1. NASA Exoplanet Archive · LHS 1140 b · composite snapshot, 25 September 2026
  2. Cadieux et al. 2024
  3. Complete measurements, uncertainties & source provenance

Kepler-186 f · Radius, Mass and Unequal Certainty

The nocturnal ridge and sky are invented. Radius alone does not establish atmospheric retention, surface gravity, climate or the particular terrain depicted. All depicted life and technology are fictional.

  1. NASA Exoplanet Archive · Kepler-186 f · composite snapshot, 25 September 2026
  2. Torres et al. 2015
  3. Calculated Value
  4. Complete measurements, uncertainties & source provenance

Kepler-413 b · Transits in a Moving Binary

The atmospheric moon is fictional. Its landscape and visibility of the parent planet are illustrative choices rather than evidence of a detected satellite. All depicted life and technology are fictional.

  1. NASA Exoplanet Archive · Kepler-413 b · composite snapshot, 25 September 2026
  2. Kostov et al. 2014
  3. Complete measurements, uncertainties & source provenance

TOI-1338 b · A Circumbinary Planet Observed in Transit

The free-fall orbital habitat is invented. The illustration does not establish artificial gravity, a particular station orbit or a calibrated appearance of both stars. All depicted life and technology are fictional.

  1. NASA Exoplanet Archive · TOI-1338 b · composite snapshot, 25 September 2026
  2. Wang & Liu 2024
  3. Complete measurements, uncertainties & source provenance

TRAPPIST-1 f · Density Beyond the Solar System

The snowy ground is speculative. Snow requires a composition and a pressure–temperature environment that are not determined merely by an Earth-scale radius. All depicted life and technology are fictional.

  1. NASA Exoplanet Archive · TRAPPIST-1 f · composite snapshot, 25 September 2026
  2. Agol et al. 2021
  3. Complete measurements, uncertainties & source provenance

HD 209458 b · The Scale of a Hot Giant

The orbital hall is fictional. A giant planet’s measured radius does not provide a solid floor or imply that an ordinary exposed landscape exists at its visible cloud tops. All depicted life and technology are fictional.

  1. NASA Exoplanet Archive · HD 209458 b · composite snapshot, 25 September 2026
  2. Stassun et al. 2017
  3. Complete measurements, uncertainties & source provenance

Kepler-62 f · An Upper Limit Is Not a Mass

The canyon plateau is imagined. The available catalog information does not establish its rock type, atmosphere, erosion history or surface water. All depicted life and technology are fictional.

  1. NASA Exoplanet Archive · Kepler-62 f · composite snapshot, 25 September 2026
  2. Borucki et al. 2013
  3. Complete measurements, uncertainties & source provenance

Kepler-47 d · Between the Orbits of a Binary System

The pictured atmospheric moon is invented. The parent planet’s discovery does not validate the satellite’s orbit, cloud layers or apparent size in this sky. All depicted life and technology are fictional.

  1. NASA Exoplanet Archive · Kepler-47 d · composite snapshot, 25 September 2026
  2. Orosz et al. 2019
  3. Complete measurements, uncertainties & source provenance

Kepler-452 b · A Long-Period Transit Signal

The sheltered landscape is fictional. Similar orbital periods do not imply identical stellar irradiation, atmospheres or climates, and no detailed surface is established by the transit data. All depicted life and technology are fictional.

  1. NASA Exoplanet Archive · Kepler-452 b · composite snapshot, 25 September 2026
  2. Jenkins et al. 2015
  3. Calculated Value
  4. Complete measurements, uncertainties & source provenance