Exoplanets: TRAPPIST-1 d

• Planet: TRAPPIST-1 d
• Sequence: 13
• Saved image path: My-Library/Images/Collections/Exoplanets/Images/Exoplanets_13-TRAPPIST-1-d.png
• Model: built-in gpt-image (recovered from session transcript)
• Generation date: 2026-07-13

Planet Profile

• Planet type: terrestrial
• Host star: ultra-cool red dwarf
• Low mass compared with Earth
• Very short orbital period
• Atmosphere unknown

Environment

• Gravity: below Earth
• Likely tidally locked
• Surface: rocky
• Possible thin atmosphere or volatile-rich environment
• Lighting: red, dim, constant on dayside

Creature Design Direction

Low-gravity glider with a delicate lightweight skeleton, broad membrane wings, huge low-light eyes, sealed matte skin, and wind-sensitive anatomy adapted to red-lit canyon terrain in a thin atmosphere.

Planet / Habitat Depicted

The image depicts a surface-level red-lit canyon habitat on a small rocky tidally locked planet: rust-red basalt cliffs, wind-carved ledges, dusty ground, a dim crimson sky, low haze, constant red dwarf illumination, and canyon updrafts carrying the gliding organism between rock walls.

Sources

• Data provided in the collection plan (Prompts/generate-exoplanets-collection.md); measurements are from published exoplanet catalogs. No web research performed for this collection.

Final Prompt Used

Create a scientifically plausible alien creature from TRAPPIST-1 d.
A low-gravity alien glider from TRAPPIST-1 d, small rocky planet around an ultra-cool red dwarf, delicate lightweight skeleton, broad membrane wings, huge eyes, floating over red-lit canyon terrain in thin atmosphere, scientific concept art.

Requirements:
- Body plan reflects the planet's below-Earth gravity: tall, lightweight, spindly, delicate skeletal supports and broad gliding membranes rather than heavy muscles.
- Sensory organs reflect dim red light from an ultra-cool red dwarf: very large dark eyes, subtle red-light reflective surfaces, and fine vibration-sensing tendrils.
- Skin and membranes reflect a possible thin atmosphere and volatile-rich rocky environment: sealed matte skin, translucent sail membranes, low-drag body, careful energy-conserving posture.
- Locomotion fits TRAPPIST-1 d's rocky, likely tidally locked terrain: the creature is gliding from one red-lit canyon wall to another, using weak gravity and thin air with wide expandable membranes.
- Depict the planet as well as the creature: show a rocky surface-level canyon habitat, rust-red basalt cliffs, wind-carved stone ledges, dusty ground texture, a dim crimson sky, low atmospheric haze, constant red dayside illumination fading toward twilight on the horizon, and sparse mineral crusts or alien lichen-like mats.
- The environment should communicate a small tidally locked rocky planet around a red dwarf even without captions: red light, long shadows, thin air, canyon updrafts, and a stark horizon.
- Make creature and environment feel physically connected: one limb just leaving a cliff ledge, dust disturbed below, membrane edges flexing in the wind, shadow on the canyon wall, and small footprints or claw marks on the rock.
- Use a surface-level habitat view. Do not show the planet itself as a separate sphere in the sky; do not add unexplained moons or extra planets.
- Avoid humanoid anatomy; this is a plausible gliding organism, not a fantasy alien or person.
- Show the creature in its natural habitat with enough space in the frame to read the red-lit canyon world around it.
- Style: natural-history field-guide illustration, realistic scientific/anatomical detail, documentary lighting, one unified scene.
- Composition: 3:2 wide landscape; balance a clear creature portrait with a readable planetary landscape. Do not crop so tightly that the world is reduced to a blurred background.
- No text or labels baked into the image. No official logos, no photorealistic real people.