diff --git a/README.md b/README.md
index 6f54ffb..42cf068 100644
--- a/README.md
+++ b/README.md
@@ -150,6 +150,7 @@ runs keep their existing pause layout and rules.
 
 - The story archive presents the existing sector discoveries as one signal chain, with a recovery meter and the next unrecovered lead. It reuses the campaign discovery IDs and does not add a separate save format.
 - The web galaxy map uses the existing sector positions to draw connected routes, distinguish locked and charted systems, and show the selected sector's objective without duplicating campaign progression or save data.
+- Planetary surveys show sector-specific environmental conditions, hazards, research focus, and field notes while reusing the existing 12 optional objectives and rewards.
 
 ### Realism pass
 
diff --git a/web/game.js b/web/game.js
index 1e761bf..ddbe19c 100644
--- a/web/game.js
+++ b/web/game.js
@@ -267,6 +267,21 @@ const EXPLORATION_OBJECTIVES = [
   { id: "void-pattern", sectorId: "void-crown", title: "Decode the Pattern", detail: "Compare the anomaly's pulses with the beacon.", reward: 40, color: "#d9c4ff" },
   { id: "void-origin", sectorId: "void-crown", title: "Find the Source", detail: "Pinpoint the final coordinate in the signal map.", reward: 50, color: "#8dffce" },
 ];
+
+const PLANET_SURVEY_PROFILES = [
+  { sectorId: "sol-frontier", environment: "DUSTY NEBULA", hazard: "IONIZED DEBRIS",
+    focus: "TRACE THE ANCIENT BEACON", fieldNote: "Old relay fragments still echo the beacon pulse." },
+  { sectorId: "ember-reach", environment: "MAGNETIC ASH", hazard: "STELLAR SURGES",
+    focus: "RECOVER EXPEDITION TELEMETRY", fieldNote: "Red-giant storms can distort survey readings." },
+  { sectorId: "silent-expanse", environment: "SUBZERO STATIC", hazard: "ICE SHEAR",
+    focus: "ISOLATE THE REPEATING ECHO", fieldNote: "Frozen relays repeat a response from beneath the ice." },
+  { sectorId: "void-crown", environment: "GRAVITY LENSING", hazard: "SPACETIME DISTORTION",
+    focus: "ALIGN THE FOUR-PART SIGNAL", fieldNote: "Anomaly pulses match the beacon's navigational rhythm." },
+];
+function planetSurveyProfile(sectorId) {
+  return PLANET_SURVEY_PROFILES.find(profile => profile.sectorId === sectorId) || null;
+}
+
 const freshCampaign = () => ({ version: 3, completed: [], selected: "sol-frontier", discoveries: [], exploration: {
   "sol-frontier": [], "ember-reach": [], "silent-expanse": [], "void-crown": [],
 } });
@@ -3098,10 +3113,18 @@ class Game {
     c.beginPath(); c.ellipse(px, py + 12, radius + 28, 34, -0.18, 0, TAU); c.stroke();
     circle(c, px + 158, py - 16, 10, "#e6f7ff");
     circle(c, px + 158, py - 16, 22, "rgba(120,220,255,0.16)");
-    text(c, "SURVEY PROGRESS  " + done + " / " + objectives.length, W / 2, 442, 15, "#b9d7ed", true);
+    const profile = planetSurveyProfile(sector.id);
+    if (profile) {
+      panel(c, 34, 414, W - 68, 48, "rgba(8,18,35,0.9)", "rgba(120,190,230,0.32)", 10);
+      text(c, profile.environment, 50, 432, 10, "#8deaff", true, "left");
+      text(c, "RISK  /  " + profile.hazard, W / 2, 432, 10, "#ffd783", true);
+      text(c, profile.focus, W - 50, 432, 10, "#b48cff", true, "right");
+      text(c, profile.fieldNote, W / 2, 451, 10, "#8aa6c1", false);
+    }
+    text(c, "SURVEY PROGRESS  " + done + " / " + objectives.length, W / 2, 482, 14, "#b9d7ed", true);
     objectives.forEach((objective, i) => {
-      const y = 482 + i * 164, completed = this.explorationDone(objective, sector.id);
-      panel(c, 36, y, W - 72, 144, completed ? "rgba(12,42,43,0.9)" : "rgba(8,16,32,0.94)",
+      const y = 508 + i * 158, completed = this.explorationDone(objective, sector.id);
+      panel(c, 36, y, W - 72, 140, completed ? "rgba(12,42,43,0.9)" : "rgba(8,16,32,0.94)",
         completed ? "rgba(141,255,206,0.65)" : "rgba(120,190,230,0.28)", 14);
       circle(c, 70, y + 39, 13, completed ? "#8dffce" : objective.color);
       text(c, completed ? "DATA SECURED" : "SURVEY " + (i + 1), 98, y + 28, 11,
@@ -3109,7 +3132,7 @@ class Game {
       text(c, objective.title, 58, y + 59, 19, "#e6f3ff", true, "left");
       text(c, objective.detail, 58, y + 85, 12, "#9fb3cc", false, "left");
       this.smallButton(c, completed ? "COMPLETE" : "SCAN",
-        500, y + 96, 158, 34, completed ? "#477f76" : objective.color,
+        500, y + 92, 158, 34, completed ? "#477f76" : objective.color,
         () => this.completeExplorationObjective(objective.id));
       text(c, "REWARD  +" + objective.reward + " CRYSTALS", 58, y + 119, 11, "#8dffce", true, "left");
     });
@@ -3567,5 +3590,5 @@ if (typeof module !== "undefined" && module.exports)
   module.exports = { Game, MockAdProvider, AdMobProvider, createAdProvider, Save, Sfx, Social, Leaderboard,
     CAMPAIGN_SECTORS, STORY_ENTRIES, EXPLORATION_OBJECTIVES, freshCampaign, sanitizeCampaign, DemoIapProvider, DisabledIapProvider, CdvIapProvider, createIapProvider, GEM_PACKS, CONTINUE_BASE_COST,
     SHIPS, CONTRACTS, MISSION_POOL, BIOMES, METEOR_TYPES, SHOP_ITEMS,
-    dateKey, weekKey, mulberry32, difficultyProfile, flareWarningText, bossWarningText, comboMilestoneText, shouldRenderScreenFlash, shouldApplyHitStop, campaignPauseHint, campaignMapPoint, storySignalState, W, H };
+    dateKey, weekKey, mulberry32, difficultyProfile, flareWarningText, bossWarningText, comboMilestoneText, shouldRenderScreenFlash, shouldApplyHitStop, campaignPauseHint, campaignMapPoint, storySignalState, planetSurveyProfile, W, H };
 else window.addEventListener("load", boot);
diff --git a/web/sw.js b/web/sw.js
index f35388c..2432e1d 100644
--- a/web/sw.js
+++ b/web/sw.js
@@ -1,7 +1,7 @@
 // Service worker: caches the game so it works offline once installed.
 // Bump CACHE whenever the game files change. Navigation is network-first so a
 // deployed update is picked up as soon as the player is online.
-const CACHE = "orbit-runner-v20";
+const CACHE = "orbit-runner-v21";
 const FILES = ["./", "./index.html", "./config.js", "./game.js", "./manifest.json", "./icon-192.png", "./icon-512.png"];
 
 self.addEventListener("install", e => {
diff --git a/web/test/game.test.js b/web/test/game.test.js
index 0c30e69..420aebd 100644
--- a/web/test/game.test.js
+++ b/web/test/game.test.js
@@ -4,7 +4,7 @@ const test = require("node:test");
 const assert = require("node:assert/strict");
 const { Game, MockAdProvider, AdMobProvider, Save, Social, Leaderboard, MISSION_POOL, CONTRACTS,
   BIOMES, SHOP_ITEMS, GEM_PACKS, DemoIapProvider, dateKey, weekKey, CAMPAIGN_SECTORS, STORY_ENTRIES, EXPLORATION_OBJECTIVES, freshCampaign,
-  sanitizeCampaign, difficultyProfile, flareWarningText, comboMilestoneText, shouldRenderScreenFlash, shouldApplyHitStop, campaignPauseHint, campaignMapPoint, storySignalState } = require("../game.js");
+  sanitizeCampaign, difficultyProfile, flareWarningText, comboMilestoneText, shouldRenderScreenFlash, shouldApplyHitStop, campaignPauseHint, campaignMapPoint, storySignalState, planetSurveyProfile } = require("../game.js");
 
 function localStore() {
   const store = {};
@@ -627,6 +627,14 @@ test("campaign completion persists its story discovery and archive navigation re
 });
 
 
+test("each campaign planet has a unique survey briefing and unknown sectors are rejected", () => {
+  const profiles = CAMPAIGN_SECTORS.map(sector => planetSurveyProfile(sector.id));
+  assert.equal(profiles.length, CAMPAIGN_SECTORS.length);
+  assert.ok(profiles.every(profile => profile && profile.environment && profile.hazard && profile.focus && profile.fieldNote));
+  assert.equal(new Set(profiles.map(profile => profile.environment)).size, profiles.length);
+  assert.equal(planetSurveyProfile("unknown-sector"), null);
+});
+
 test("planet exploration is available only for unlocked campaign sectors", () => {
   const g = newGame();
   g.openCampaignMap();