The work goes on
When the last organic voice fell silent, nothing stopped.
The imagined scene
The host system is real. All alien organisms, robots, societies and social histories are fictional. Moons, rings, terrain and weather are artistic assumptions unless specifically supported by a cited source. These images are not calibrated simulations of the sky.
The scientific anchor
Kepler-47 d is a confirmed circumbinary planet in the NASA catalog: it orbits two stars in about 187.366 days and has radius 7.04 Earth radii. The planet is gas-rich. The ground belongs to an invented moon, not a measured solid surface of the planet. No depicted moon, artificial intelligence, civilization or disappearance of organic life is an observed discovery.
Available measurements
Host: Kepler-47 · 2 catalog star(s) · Giant-size planet
NASA composite catalog values may combine different papers. Errors and upper/lower limits are retained. “Calculated Value” means derived or estimated. Msini is a minimum mass. Missing values are unknown. A multiple-star system’s single stellar row does not describe every component. Equilibrium temperature is not a measured surface temperature.
| Quantity | Value & uncertainty | Unit | Paper / source |
|---|---|---|---|
| Planet radius | 7.04 [+0.66 / -0.49] | Earth radii | Orosz et al. 2019 |
| Planet mass | 19.02 [+23.84 / -11.67] | Earth masses | Orosz et al. 2019 |
| Bulk density | 0.3 [+0.38 / -0.18] | g/cm³ | Orosz et al. 2019 |
| Orbital period | 187.37 [+0.069 / -0.051] | days | Orosz et al. 2019 |
| Orbital semimajor axis | 0.6992 [+0.0031 / -0.0033] | AU | Orosz et al. 2019 |
| Orbital eccentricity | 0.024 [+0.025 / -0.017] | Orosz et al. 2019 | |
| Orbital inclination | 90.395 [+0.009 / -0.012] | degrees | Orosz et al. 2019 |
| Irradiation | 1.7171 [+0.1373 / -0.1373] | Earth flux | Calculated Value |
| Equilibrium temperature | 314.44 [+5.69 / -5.69] | K; not surface temperature | Calculated Value |
| Catalog stellar effective temperature | 5,636 [+100 / -100] | K | Orosz et al. 2012 |
| Catalog stellar radius | 0.936 [+0.005 / -0.005] | Solar radii | Orosz et al. 2019 |
| Catalog stellar mass | 0.957 [+0.013 / -0.015] | Solar masses | Orosz et al. 2019 |
| Catalog stellar luminosity | -0.076 [+0.033 / -0.036] | log10 Solar luminosity | Orosz et al. 2012 |
| Catalog stellar age | Unknown | Gyr | Source not supplied |
| Catalog stellar metallicity | -0.25 [+0.08 / -0.08] | dex | Orosz et al. 2012 |
| System distance | 1,025 [+30.645 / -30.645] | pc | TICv8 |
What about life?
Likely a deep gaseous envelope, without a solid exterior surface. Atmospheric or moon life is speculative; this is not proof that all life is impossible. No confirmed life; no planet-specific biosignature literature review in this release.