Fix content inconsistencies found in a site-wide review

README.md

@@ -10,7 +10,9 @@ Static files, no build step, no server, zero running cost. Published with GitHub
 | --- | --- |
 | `index.html`, `en/index.html` | The entrance: the era at a glance, Chinese and English |
 | `archive/2219-signal/` | The full record of the 2219 signal from Ross 128 b: the log, arrival times, the beacon decoder, letters |
-| `script/` | The grid script: how the translating machine writes down what Ross 128 b sends (`script/`), the online dictionary (`script/dictionary/`) and a converter between page source and drawings (`script/convert/`), Chinese with English under `en/`. `lib/glyph.js` is a JavaScript port of [glyph-cli](https://github.com/InterImm/glyph-cli) 0.2.0 and `lib/glyph-vocab.json` is its bundled vocabulary; `lib/glyph-zh.json` holds the Chinese glosses |
+| `script/` | The grid script: how the translating machine writes down what Ross 128 b sends (`script/`), the online dictionary (`script/dictionary/`) and a converter between page source and drawings (`script/convert/`), Chinese with English under `en/`. `lib/glyph.js` is a JavaScript port of [glyph-cli](https://github.com/InterImm/glyph-cli) 0.3.0 (grammar v8) and `lib/glyph-vocab.json` is its bundled vocabulary; `lib/glyph-zh.json` holds the Chinese glosses |
+| `signals/` | The five transmissions (picture, shadow, pulsars, chords, 137), each playable, and the resonance theory of their speech; the sound is computed by `lib/signals.js` |
+| `drift/` | Drift: how the Sun and Ross 128 move relative to each other, from the Bronze Age to the closest approach (`lib/drift.js`) |
 | `pulsars/` | The pulsar ledger, live: the pulsars that keep the MC clock, the ledger nodes and the timing residuals where the beacon repeats. Self-contained (its own page, `app/pulsars.js` and `app/pulsars.css`) so it can move to its own repo later |
 | `kit/` | The phase 2 design kit, 137, published at https://interstellar.interimm.org/kit/ ([kit/README.md](kit/README.md)) |
 | `app/` | Page scripts and styles |
@@ -20,7 +22,7 @@ Run it locally with any static server, for example `python3 -m http.server`, and
 
 `npm test` checks `lib/glyph.js` against what glyph-cli itself outputs (`tests/glyph-cli-fixtures.json`). After a new glyph-cli
 release or a vocabulary change, copy its `vocab.json` to `lib/glyph-vocab.json`, add the Chinese glosses to `lib/glyph-zh.json`,
-and regenerate the fixtures with `pip install glyph-cli` and `python3 scripts/glyph_fixtures.py`.
+and regenerate the fixtures with that release installed (`pip install glyph-cli==0.3.0`; until it is on PyPI, `pip install git+https://github.com/InterImm/glyph-cli`) and `python3 scripts/glyph_fixtures.py`.
 
 The previous Hugo site (2022, "飞向恒星 / we must leave the solar system") is in the git history. The draft about
 the first Earth–Mars conflict lives on the branch `cms/interstellar/草稿`.
@@ -30,7 +32,7 @@ the first Earth–Mars conflict lives on the branch `cms/interstellar/草稿`.
 - Story time = real time + 70,491 days. The present is 2219.
 - No interstellar ships on either side; contact is communication only.
 - The source is Ross 128 b, a real temperate planet (at least 1.4 Earth masses, 9.87-day orbit, tidally locked) around
-  the old, quiet red dwarf Ross 128 in Virgo, 11.01 light years away. The transmitter rides on the planet, so the tone
+  the old, quiet red dwarf Ross 128 in Virgo, 10.98 light years away. The transmitter rides on the planet, so the tone
   drifts with its orbit.
 - The signal: first detected 2219-09-18 03:12:07 UTC by the MC ledger's pulsar-timing node on the lunar far side, then
   Earth, Isidis (Mars) and Ceres; made public 2219-10-05. 1420.405 MHz, prime-spaced preamble, a 667-bit picture

app/signal.js

@@ -16,7 +16,7 @@ const T = zh ? {
   copied: '链接已复制',
   sharedTitle: '有人给罗斯128 b写了一封信',
   tooShort: '先写点什么。',
-  saved: '已发出。它会以光速走 11.01 年。',
+  saved: '已发出。它会以光速走 10.98 年。',
   unsaved: '已发出，但这个浏览器不能保存它；刷新后就看不到了。',
   fold: (w) => `每行 ${w} 位`,
   found: `23 × 29 = 667。两个都是质数，只有这一种折法能成图。`,
@@ -36,7 +36,7 @@ const T = zh ? {
   copied: 'Link copied',
   sharedTitle: 'Someone wrote a letter to Ross 128 b',
   tooShort: 'Write something first.',
-  saved: 'Sent. It will travel at light speed for 11.01 years.',
+  saved: 'Sent. It will travel at light speed for 10.98 years.',
   unsaved: 'Sent, but this browser could not keep it; it will be gone after a reload.',
   fold: (w) => `${w} bits per row`,
   found: '23 × 29 = 667. Both are prime, so this is the only fold that makes a picture.',

archive/2219-signal/en/index.html

@@ -5,7 +5,7 @@
 <meta name="viewport" content="width=device-width, initial-scale=1">
 <meta name="color-scheme" content="dark">
 <title>The 2219 signal | The Contact Era</title>
-<meta name="description" content="On 2219-09-18 every pulsar ledger in the solar system heard the same faint pattern from Ross 128 b, 11.01 light years away. How it started, the beacon to decode, and a letter to write back.">
+<meta name="description" content="On 2219-09-18 every pulsar ledger in the solar system heard the same faint pattern from Ross 128 b, 10.98 light years away. How it started, the beacon to decode, and a letter to write back.">
 <link rel="alternate" hreflang="zh-CN" href="https://interstellar.interimm.org/archive/2219-signal/">
 <link rel="alternate" hreflang="en" href="https://interstellar.interimm.org/archive/2219-signal/en/">
 <link rel="icon" href="../../../favicon.svg" type="image/svg+xml">
@@ -29,7 +29,7 @@
       <div class="hero-grid">
         <div>
           <p class="kicker"><span class="pulse"></span>Archive · made public 2219-10-05 · 1420.405 MHz</p>
-          <h1>Someone is calling from <span class="num">11.01</span> light years away.</h1>
+          <h1>Someone is calling from <span class="num">10.98</span> light years away.</h1>
           <p class="lede">On 2219-09-18 every pulsar ledger in the solar system logged the same faint pattern. It comes from Ross 128 b, it was sent on purpose, and it is still arriving.</p>
           <div class="hero-actions">
             <a class="btn btn-primary btn-lg" href="#signal">How it started</a>
@@ -38,14 +38,14 @@ <h1>Someone is calling from <span class="num">11.01</span> light years away.</h1
         </div>
         <figure class="scope">
           <canvas data-waterfall data-line="0.62" width="280" height="140" role="img" aria-label="A live waterfall spectrogram: noise, with one narrow line that switches on and off"></canvas>
-          <figcaption><span>waterfall · 1420.405 MHz ± 40 kHz</span><time class="readout" data-story-clock>--:--:-- UTC</time></figcaption>
+          <figcaption><span>waterfall · 1420.405 MHz ± 600 kHz</span><time class="readout" data-story-clock>--:--:-- UTC</time></figcaption>
         </figure>
       </div>
       <dl class="readouts">
         <div><dt>Source</dt><dd>Ross 128 b · M4V</dd></div>
-        <div><dt>Distance</dt><dd>11.01 ly</dd></div>
+        <div><dt>Distance</dt><dd>10.98 ly</dd></div>
         <div><dt>Position</dt><dd>11h47m44s +00°48′</dd></div>
-        <div><dt>Light left them</dt><dd id="ro-left">2209</dd></div>
+        <div><dt>Light left them</dt><dd id="ro-left">2208</dd></div>
         <div><dt>Days since</dt><dd data-days-since="2219-09-18T03:12:07Z">–</dd></div>
       </dl>
     </div>
@@ -63,33 +63,33 @@ <h2 class="section-title" id="signal-title">How it started</h2>
           <li>
             <time datetime="2219-09-18T03:12:07Z">2219-09-18 03:12:07 UTC · Farside</time>
             <h3>A residual nobody expected</h3>
-            <p>The ledger node on the far side of the Moon times twelve pulsars to keep the MC clock. At 03:12 it logged a narrow tone at 1420.405 MHz, the frequency of cold hydrogen, switching on and off. It was filed as local interference.</p>
+            <p>The ledger node on the far side of the Moon times twelve pulsars to keep the MC clock. At 03:12 it logged a narrow tone at 1420.55 MHz, just above 1420.405 MHz, the frequency of cold hydrogen, switching on and off. It was filed as local interference.</p>
           </li>
           <li>
-            <time datetime="2219-09-18">2219-09-18 · within 25 minutes</time>
+            <time datetime="2219-09-18">2219-09-18 · within half an hour</time>
             <h3>Every other ledger heard it too</h3>
             <p>Earth, Isidis on Mars and the Ceres node logged the identical pattern, each at a different moment. Ledgers compare notes at light speed, so the comparison alone took most of the day.</p>
           </li>
           <li class="is-key">
             <time datetime="2219-09-18">2219-09-18</time>
             <h3>The delays point at one star</h3>
-            <p>The arrival times fit a single wave from one direction outside the solar system: RA 11h 47m 44.4s, Dec +00° 48′ 16″. That is Ross 128, a quiet red dwarf in Virgo, much dimmer than the Sun and about twice as old, 11.01 light years away. In 2017 the Arecibo telescope recorded odd signals from this direction; they turned out to be Earth satellites. This time they are not.</p>
+            <p>The arrival times fit a single wave from one direction outside the solar system: RA 11h 47m 44.4s, Dec +00° 48′ 16″. That is Ross 128, a quiet red dwarf in Virgo, much dimmer than the Sun and about twice as old, 10.98 light years away. In 2017 the Arecibo telescope recorded odd signals from this direction; they turned out to be Earth satellites. This time they are not.</p>
           </li>
           <li>
             <time datetime="2219-09-21">2219-09-21</time>
             <h3>It is not natural</h3>
-            <p>The pulses are separated by 2, 3, 5, 7, 11 … 47 units: the prime numbers, in order. No pulsar, maser or reflection does that. Then 667 bits follow, and the whole sequence repeats.</p>
-          </li>
-          <li>
-            <time datetime="2219-09-28">2219-09-28</time>
-            <h3>The transmitter is on the planet</h3>
-            <p>The tone slides up and down by about 260 kHz every 9.87 days, exactly the time Ross 128 b takes to circle its star. The transmitter rides on that planet, and whoever built it did not correct for the Doppler shift. The planet is tidally locked: one side always day, the other always night.</p>
+            <p>The pulses are separated by 2, 3, 5, 7, 11 … 47 units: the prime numbers, in order. No pulsar, maser or reflection does that. Then 667 bits follow. The beacon comes back every 9 h 41 m, and each pass carries a different transmission in turn, so the 667 bits only return every fifth pass. <a href="../../../signals/en/">The five transmissions</a>.</p>
           </li>
           <li>
             <time datetime="2219-09-27">2219-09-27</time>
             <h3>The 667 bits are a picture</h3>
             <p>667 is 23 × 29. Folded into rows of 23, the bits make a drawing. <a href="#decode">Fold it yourself.</a></p>
           </li>
+          <li>
+            <time datetime="2219-09-28">2219-09-28</time>
+            <h3>The transmitter is on the planet</h3>
+            <p>The tone sits 0.01% above hydrogen's line because Ross 128 is coming toward us at 31 km/s, and it slides up and down by about 260 kHz every 9.87 days, exactly the time Ross 128 b takes to circle its star. The transmitter rides on that planet, and whoever built it did not correct for the Doppler shift. The planet is tidally locked: one side always day, the other always night.</p>
+          </li>
           <li class="is-key">
             <time datetime="2219-10-05">2219-10-05</time>
             <h3>Made public</h3>
@@ -162,16 +162,16 @@ <h3>3 · Fold it</h3>
         <p class="kicker">Distance</p>
         <h2 class="section-title" id="distance-title">Nobody is coming.</h2>
       </header>
-      <p class="distance-big">11.01 <small>light years</small></p>
+      <p class="distance-big">10.98 <small>light years</small></p>
       <div class="gap-line" aria-hidden="true"><span class="us">Sun · us</span><span class="packet"></span><span class="them">Ross 128 b · them</span></div>
       <div class="prose">
-        <p>Not us, and not them. Neither side can build a ship that crosses 11.01 light years, and nothing in the signal suggests they are trying. What crosses is light.</p>
-        <p>So this is contact by correspondence. A question sent today reaches them on <span class="readout" id="dist-arrives">2230</span>. If they answer at once, the reply lands on <span class="readout" id="dist-answer">2240</span>. Every exchange takes a generation, and the people who start a conversation may not be the ones who finish it.</p>
+        <p>Not us, and not them. Neither side can build a ship that crosses 10.98 light years, and nothing in the signal suggests they are trying. What crosses is light.</p>
+        <p>So this is contact by correspondence. A question sent today reaches them on <span class="readout" id="dist-arrives">2230</span>. If they answer at once, the reply lands on <span class="readout" id="dist-answer">2241</span>. Every exchange takes a generation, and the people who start a conversation may not be the ones who finish it.</p>
       </div>
       <dl class="readouts">
-        <div><dt>One way</dt><dd>11.01 yr</dd></div>
-        <div><dt>Round trip</dt><dd>22.02 yr</dd></div>
-        <div><dt>Distance</dt><dd><span id="dist-km">104.2</span> trillion km</dd></div>
+        <div><dt>One way</dt><dd>10.98 yr</dd></div>
+        <div><dt>Round trip</dt><dd>21.96 yr</dd></div>
+        <div><dt>Distance</dt><dd><span id="dist-km">103.9</span> trillion km</dd></div>
       </dl>
       <p class="after-word">For now, theirs is the only voice we can hear.</p>
     </div>