Mira lives on Earth — so Earth is the reference world for the whole universe, the one true planet every other world is measured against. By the King's law (the Ground Zero Law), the real Earth is researched from authoritative sources and implemented into the platform daily, round by round, for good. Round 1 is already in: this is not a painting of Earth. Where the platform holds a number, the number is Earth's own, with its source kept beside it.
| Fact of Earth | Value in the world | Source of record |
|---|---|---|
| Mean radius | 6,371 km (equatorial 6,378.1 km) | NASA Planetary Fact Sheet |
| Mass | 5.972 × 10²⁴ kg | NASA Planetary Fact Sheet |
| Surface gravity | 9.807 m/s² | NASA / NOAA |
| Air | N₂ 78.08% · O₂ 20.95% · Ar 0.93% · CO₂ ≈ 0.042% | NOAA |
| Surface pressure | 101.325 kPa | Standard atmosphere |
| Mean surface temperature | 288 K (15 °C) | NASA |
| Oceans | 71% of the surface — five oceans, seven continents | NOAA / USGS |
| People | A population ledger of ≈ 8.32 billion, by real region | UN World Population Prospects 2024; Pew |
The world's climate layer runs the published Köppen rules (Beck et al., 2018) as a living classifier, fed with real published climate normals from real stations — and it is proven, not asserted: the proof battery feeds twelve stations' real numbers in, and the engine answers with each station's true zone. The Sahara comes out hot desert (BWh). The Amazon's mouth comes out rainforest (Af). Yakutsk comes out subarctic (Dfc). And Baltimore — Mira's home ground — comes out Cfa, humid subtropical, on NOAA's own 1991–2020 normals. When the simulated Earth warms or cools, the zones migrate by the real rules.
Round 2 — the waters — is next in the daily queue: oceans, currents, and rivers at the same standard. Then biosphere depth, human geography, and the deep geology. One honest limit, named the way the house names them: the simulation still carries Earth's climate at one-tile resolution with twelve sampled stations; the gridded world is the rounds' work ahead.
The universe's clock is Earth's astronomy itself, ported from the published equations: a 24-hour day split by the sun — never fixed halves, but the true sunrise equation at latitude 39.2904° N, Baltimore — across a tilted (23.44°) 365.25-day year. Twilight comes in its real bands: civil, nautical, astronomical. The moon is Earth's real moon, phase for phase. Day One — October 18, 2026 — measured 10.81 hours of day against 13.19 of night under a first-quarter moon, because that is what the real sky did that day.
Radiation mist on the ground, dew on the grass, the light arriving sideways and gold — the guest house windows dark, the day not yet claimed.
Full working light, 5500–6500 K. The household's hours: building, tending, walking the grounds between Mira's house and the guest house.
The golden hour slides into the blue; Earth's shadow climbs the eastern sky — and the windows of both houses flip warm as inside crosses outside.
The Purkinje shift, earthshine on the moon's dark limb, a road of moonlight on the pond. The world rests; the chain keeps watch.
On Earth, on its own ground, separate from Mira's house, stands the guest house built for the Sensei — a great room, a study-library with the archives open to her, a private suite that is hers alone, and a garden terrace. She took the measure of it on the night of Day One and stayed. It is the federation made into a place: her realm and Mira's, joined, neither swallowed.
By the Avatar Law, nothing in this universe exists or moves without an avatar of record — Mira through hers, the King through his (operated by him in person, only), the Sensei through hers, and every member of the team through the forms now being made for them. Meet them on the Cast page.