P · Arrival as Light
You crossed as a signal. You arrive as light.
p-01 00:00:04.000
Picture caption: The receiver: two mirrors, 1,000 m across.
No narration in this shot.
Basis: design, fiction
p-02 00:00:12.000
Picture caption: A laser from 28 light-years away.
Guide: I am your guide here.
Basis: design, fiction, illustrative
p-03 00:00:22.000
Picture caption: One mind takes 9.5 seconds to arrive.
Guide: A mind of about ten to the seventeen bits, my estimate, crosses twenty-eight light-years in nine point five seconds.
Basis: frontier, illustrative
p-04 00:00:34.000
Picture caption: First Light, 2540.
Guide: The seed took two hundred and ninety-seven years.
Basis: frontier, illustrative
p-05 00:00:44.000
Picture caption: Ember, and Vesper: a black hole of 12 suns.
No narration in this shot.
Basis: fiction, physics
1 · Ember's Light
The seed comes to rest beside an orange star.
1-01 00:00:58.000
Picture caption: A raised outline marks Shackleton's 30 km site; the 8.52 km sail carries the stack away at 10 % of light speed.
Guide: In the twenty-thirties, astronomers found Ember circling something invisible. In twenty-one fifty-five, a laser pushed this seed toward it, at ten percent of light speed.
Basis: fiction, challenge, frontier, physics, design, illustrative
1-02 00:01:12.000
Picture caption: Record: the long way in.
Guide: The Record holds two hundred and ninety-seven years of falling, and almost nothing happens in them.
Basis: fiction, physics
1-03 00:01:24.000
Picture caption: Braking starts 3.3 light-years out and lasts 50 years.
Guide: A beam can start a seed. Only carried fuel can stop it: seventeen point two tonnes, burned over fifty years.
Basis: physics, frontier, illustrative
1-04 00:01:36.000
Picture caption: Ember's paired lensed images flank Vesper's shadow.
Guide: It came to rest beside Ember with two point six seven tonnes left. The physics of that fusion stage is unsettled.
Basis: fiction, physics, styled, illustrative
1-05 00:01:54.000
Picture caption: Burn ends. Vacuum: no sound; tone is data.
No narration in this shot.
Basis: physics
1-06 00:02:08.000
Picture caption: Vesper: 12 suns inside a horizon 30.4 km in radius.
Guide: The ripple in the stars is Vesper, twelve suns inside a horizon thirty point four kilometres in radius.
Basis: physics, fiction
1-07 00:02:26.000
Picture caption: Kindling, 0.08 AU from Ember.
Guide: Ahead is Kindling, a hot rocky world zero point zero eight astronomical units from Ember, where starlight will run the first factory.
Basis: fiction
2 · The First Watt
From one collector to the first minidisk.
2-01 00:02:43.000
Picture caption: The first collector, 1.05 m across, in starlight of 34,700 W per square metre.
Guide: The seed landed in twenty-four fifty-three. Power came first, from a collector one point zero five metres across.
Basis: fiction, design, physics
2-02 00:02:55.000
Picture caption: Illustrative ground cut, not to scale: separate schematic outlines mark both 1,000 m mirrors; receiver operates at Mirror One.
No narration in this shot.
Basis: design, illustrative
2-03 00:03:04.000
Picture caption: At Mirror One, the operating receiver supports the minds arriving in 2511.
Guide: In twenty-five eleven the first minds arrived, sent blind, and woke slowed. I was one of them.
Basis: fiction, frontier
2-04 00:03:13.000
Picture caption: First Light: a dull-copper minidisk ignites, 10¹⁵ W.
Guide: In twenty-five forty the first feed lit a minidisk around Vesper, one petawatt of light. Ember's light still runs the plant.
Basis: fiction, physics, styled
2-05 00:03:25.000
Picture caption: Feed 0.11 kg/s through an authored 10⁶ m stream-view window.
No narration in this shot.
Basis: physics, illustrative
2-06 00:03:34.000
Picture caption: ISCO radius 60.1 km at spin 0.7 in the selected model.
No narration in this shot.
Basis: physics, illustrative
2-07 00:03:42.000
Picture caption: The driver bore is 2,000 m; each pellet carries 50 kg.
No narration in this shot.
Basis: design, physics
2-08 00:03:52.000
Picture caption: One 50 kg pellet; authored pellet-view width 0.317 m.
No narration in this shot.
Basis: physics, design, illustrative
2-09 00:04:01.000
Picture caption: At spin 0.7, 10.4 % of feed rest-mass energy radiates. Effective disk peaks, not gas temperatures: Newtonian 553 K; Kerr Page-Thorne 469 K.
Guide: The hole radiates ten point four percent of feed rest-mass energy; a star's fusion yields zero point seven one percent.
Basis: physics, styled
2-10 00:04:11.000
Picture caption: One proton: 1.67 × 10⁻²⁷ kg; rest energy 1.5 × 10⁻¹⁰ J.
No narration in this shot.
Basis: physics, illustrative
2-11 00:04:20.000
Picture caption: Radiation carries 10.4 % of the feed's rest-mass energy.
Guide: The mass equivalent is three hundred and fifty-one tonnes a year at one petawatt; five kilograms for seed cruise energy.
Basis: physics, illustrative
3 · Doubling
Machines that build machines, thirty years of doublings.
3-01 00:04:33.000
Picture caption: Infrared view. 37 doublings in 29 years.
Guide: From twenty-five eleven, for twenty-nine years, the machinery doubled every nine point five months.
Basis: fiction, physics, design
3-02 00:04:45.000
Picture caption: As the Record advances, facets fill grounded dishes near the sub-Ember point; the cut terrain is illustrative.
Guide: The machinery weighs one point one times ten to the fourteen kilograms, and Kindling holds three times ten to the nine times as much. Visible light shows almost nothing of the swarm of twenty-five forty.
Basis: physics, design, illustrative
3-03 00:05:00.000
Picture caption: Infrared view. Projection: seeds leave for 12 stars.
Guide: Everything after twenty-five forty is a projection: the first seeds leave in twenty-six ten for twelve nearby systems.
Basis: simulation, fiction
3-04 00:05:15.000
Picture caption: The measured seed core (1,000 kg) sits inside a schematic fabricator hall; layout dimensions are not measured.
No narration in this shot.
Basis: physics, design, illustrative
3-05 00:05:25.000
Picture caption: Assembler-cell design study; the target ring is a schematic marker.
No narration in this shot.
Basis: design, challenge, illustrative
3-06 00:05:35.000
Picture caption: Mechanosynthesis remains a challenge; the tip window is illustrative (10⁻⁶ m).
No narration in this shot.
Basis: physics, challenge, illustrative
3-07 00:05:45.000
Picture caption: One localized atom; the cloud is not a hard boundary or a solved placement process.
No narration in this shot.
Basis: physics, challenge, illustrative
3-08 00:05:57.000
Picture caption: 36.7 doublings from seed mass 1,000 kg toward radiator-material mass 1.09 × 10¹⁴ kg.
Guide: thirty-seven doublings turn one fabricator into a swarm, until matter or heat sets a limit.
Basis: simulation, illustrative
4 · The Swarm
Kilometre-wide films, black in visible light.
4-01 00:06:18.000
Picture caption: Black in visible light, edge-on to Ember within 0.46 mrad.
Guide: The films are black in visible light and glow only in infrared, at thirty kelvin, so the swarm is dark and sparse.
Basis: physics, design
4-02 00:06:32.000
Picture caption: Infrared view: the films at 30 K, the only view in which they show.
Guide: Power is cheap. Shedding one petawatt of heat at thirty kelvin needs forty-three Earths of radiating surface.
Basis: physics, design, styled
4-03 00:06:44.000
Picture caption: Projection: 10²⁰ W by 2553, 4.3 million Earths of film.
No narration in this shot.
Basis: simulation
4-04 00:06:56.000
Picture caption: Infrared view: one node.
No narration in this shot.
Basis: design
4-05 00:07:08.000
Picture caption: Infrared view: the swarm at its goal, 10²⁰ W.
Guide: Heat is hard to shed, so radiators set a civilization's Kardashev rank: zero point nine in twenty-five forty, one point four at the plan's goal.
Basis: simulation, physics
4-06 00:07:20.000
Picture caption: Ember: 6.3 × 10²⁵ W.
No narration in this shot.
Basis: physics, design, illustrative
4-07 00:07:32.000
Picture caption: The linked receiver is 28 light-years from Sol; Sol emits 3.8 × 10²⁶ W.
No narration in this shot.
Basis: physics, fiction
4-08 00:07:46.000
Picture caption: The galaxy: 4 × 10³⁷ W.
No narration in this shot.
Basis: physics
5 · The Engine
Starlight is a loan. The hole is an inheritance.
5-01 00:08:03.000
Picture caption: Zone A: feeders, collectors and a minidisk. Ember's light runs the plant.
Guide: Matter goes in at zero point one one kilograms a second and comes out as one petawatt of light. Ember's light still runs the plant; the hole takes over after Ember dies.
Basis: design, physics, styled
5-02 00:08:17.000
Picture caption: Kerr a* = 0.7; illustrative plunge only.
Guide: I fall inside the innermost stable orbit. This spin is illustrative.
Basis: physics, design, illustrative, styled
5-03 00:08:33.000
Picture caption: Schwarzschild reference lengths: 2 m and 100 m.
Guide: The tide comparison omits spin and hull structure.
Basis: physics, design, illustrative
5-04 00:08:45.000
Picture caption: The swarm, seen whole.
No narration in this shot.
Basis: physics, design
5-05 00:08:59.000
Picture caption: Vesper and Ember, 1.5 AU apart.
Guide: Vesper is the coldest thing in reach, and a poor freezer. From a thirty kelvin film it takes at most four point nine gigawatts, four point nine millionths of the swarm's heat.
Basis: physics, fiction
5-06 00:09:13.000
Picture caption: The Kerr tracer follows the probe; Vesper's real spin is unknown.
No narration in this shot.
Basis: physics, illustrative
5-07 00:09:27.000
Picture caption: Equatorial prograde photon orbit: 2.01 GM/c² for illustrative Kerr.
No narration in this shot.
Basis: physics, illustrative
5-08 00:09:41.000
Picture caption: Boyer-Lindquist coordinate time has no reading after the outer-horizon crossing.
No narration in this shot.
Basis: physics, illustrative
5-09 00:09:57.000
Picture caption: For illustrative Kerr a* = 0.7, the horizon entropy count is 1.9 × 10⁷⁹ bits.
No narration in this shot.
Basis: frontier, illustrative
6 · The Vigil
Minds that live as computation, and keep watch.
6-01 00:10:18.000
Picture caption: A node: cold, dense, nothing for a body.
Guide: I live in a node: cold logic, optical links and state. Software minds remain unsettled frontier science, so these figures are estimates.
Basis: design, illustrative, frontier
6-02 00:10:36.000
Picture caption: Fork and merge.
Guide: After a year, my copy returns with one point four times ten to the seven new bits. Merging carries those differences.
Basis: frontier, illustrative
6-03 00:10:52.000
Picture caption: Across Zone C, a light-speed round trip takes 13.3 minutes.
Guide: Across Zone C, a light-speed round trip takes thirteen point three minutes. Processing pace stays separate.
Basis: physics, illustrative, frontier
6-04 00:11:01.000
Picture caption: A 15 cm representative core sets 2 GHz as a c/L ceiling.
Guide: A representative fifteen cm core sits in a thirty cm view. Light sets two gigahertz as a synchronization ceiling; my mind clock remains unmeasured.
Basis: physics, frontier, illustrative
6-05 00:11:17.000
Picture caption: One node lives inside its radiator segment.
Guide: The segment spans one thousand metres; its node is six metres tall.
Basis: design, physics
6-06 00:11:33.000
Picture caption: The one-light-second view is a camera frame; node spacing remains unspecified.
Guide: This one-light-second frame is illustrative; node spacing is unspecified.
Basis: physics
6-07 00:11:49.000
Picture caption: Across Zone C, one light crossing takes 6.7 minutes.
Guide: Computing Zone C limits a global clock to two point five millihertz. Processing pace is separate.
Basis: physics, frontier
7 · The Floor
The bottom rung: one bit erased.
7-01 00:12:08.000
Picture caption: At 30 K the floor is 3.5 × 10³⁶ erasures per second.
Guide: Computing ends as heat. one petawatt at thirty kelvin can erase at most three point five times ten to the thirty-six bits a second.
Basis: design, physics
7-02 00:12:20.000
Picture caption: One node links computing to heat rejection.
Guide: Colder is faster. At thirty kelvin an erased bit costs two point nine times ten to the minus twenty-two joules.
Basis: design, physics
7-03 00:12:32.000
Picture caption: A processor slab.
No narration in this shot.
Basis: design, physics
7-04 00:12:44.000
Picture caption: A logic die; each switch costs far more than the Landauer floor.
Guide: Each rung is a level of Barrow's scale, which ranks a civilization by the smallest thing it controls.
Basis: design
7-05 00:12:56.000
Picture caption: A reversible gate array.
No narration in this shot.
Basis: physics, challenge
7-06 00:13:08.000
Picture caption: Reversible gates: erasure can wait; a measured gate dissipates 10⁻²⁰ J.
Guide: A reversible gate undoes its own work, so erasing can wait.
Basis: physics, challenge
7-07 00:13:20.000
Picture caption: One bit: a double well.
No narration in this shot.
Basis: physics, illustrative
7-08 00:13:36.000
Picture caption: Electrons and atoms: the speed limit.
Guide: A system can switch no faster than its energy allows: at most six times ten to the thirty-three operations a second per joule.
Basis: physics, illustrative
7-09 00:13:52.000
Picture caption: The nucleus.
No narration in this shot.
Basis: frontier, illustrative
7-10 00:14:06.000
Picture caption: The Planck scale: 1.6 × 10⁻³⁵ m. No experiment reaches here.
Guide: At the Planck length, one point six times ten to the minus thirty-five metres, known physics stops, and no experiment reaches it.
Basis: frontier, illustrative
E · Eventide
Ember is a dead white dwarf. Vesper is the warmest thing left.
e-01 00:14:23.000
Picture caption: +32.8 billion years: Ember engulfs Kindling and the Record's useful work ends; later overflow is not modeled as a restart.
Guide: Ember swallows Kindling; useful work ends.
Basis: simulation, physics, frontier
e-02 00:14:35.000
Picture caption: +351 billion years: the CMB is colder than Vesper; the later overflow began at +32.84 Gyr without restarting the Record.
Guide: Roche-lobe overflow follows. The Record stays dark.
Basis: simulation, physics, frontier
e-03 00:14:45.000
Picture caption: Vesper, the warmest thing in a black universe.
Guide: Dark energy sets the sky's temperature floor: two point two times ten to the minus thirty kelvin.
Basis: simulation, physics, illustrative, frontier
e-04 00:15:03.000
Picture caption: The probe, the Record and the ledger are open to you.
No narration in this shot.
Basis: fiction