diff --git a/game.sqlite b/game.sqlite
index c750198..8ad8f9f 100644
Binary files a/game.sqlite and b/game.sqlite differ
diff --git a/stars.py b/stars.py
index a61da23..a7819f5 100644
--- a/stars.py
+++ b/stars.py
@@ -35,11 +35,19 @@ Stars have what qualities?
  ♈ ♉ ♊ ♋ ♌ ♍ ♎ ♏ ♐ ♑ ♒ ♓
 
 '''
-from random import randint, expovariate, seed, gauss
+from random import randint, expovariate, seed, gauss, lognormvariate
 from poisson import poisson
 from wordlist import generate_name
 
 
+ROMAN_NUMBERS = [
+    None,  # no zero, but this aligns entries and their indicies
+    'I', 'II', 'III', 'IV', 'V', 'VI', 'VII', 'VIII', 'IX', 'X',
+    'XI', 'XII', 'XIII', 'XIV', 'XV', 'XVI', 'XVII', 'XVIII', 'XIX', 'XX',
+    'XXI', 'XXII', 'XXIII', 'XXIV', 'XXV', 'XXVI', 'XXVII', 'XXVIII', 'XXIX',
+    ]
+
+
 seed(23)
 
 MINIMUM_DISTANCE_BETWEEN_STARS = 160
@@ -58,7 +66,7 @@ TABLES = [
         x INTEGER,
         y INTEGER,
         radius INTEGER,
-        name TEXT
+        name TEXT UNIQUE
     )''',
     ('''\
     create table planets (
@@ -66,6 +74,14 @@ TABLES = [
         ordo INTEGER,'''  # The order from the star, counting from 1.
         # I use "ordo" instead of "order" because "order" is a keyword
         # in SQL (or at least it caused a syntax error in SQLite.)
+
+        # These capacities are fixed and reflect the conditions on the
+        # planet in a very abstract way.  Bio and Industry should be
+        # low/high near and far from the star and high/low in the mid-
+        # range, but for now I'm just going to use random numbers.
+     '''bio_capacity INTEGER,
+        industrial_capacity INTEGER,
+     '''
      '''star INTEGER,
         FOREIGN KEY(star) REFERENCES stars(id)
     )'''),
@@ -76,7 +92,11 @@ def init_db(conn):
     print('Generating star data.')
     c = conn.cursor()
     for values in generate_stars(WIDTH, HEIGHT, MINIMUM_DISTANCE_BETWEEN_STARS):
-        c.execute('insert into stars(x, y, radius, name) values (?, ?, ?, ?)', values)
+        try:
+            c.execute('insert into stars(x, y, radius, name) values (?, ?, ?, ?)', values)
+        except sqlite3.IntegrityError:
+            print(values)  # "Rubbpo"
+            continue
         generate_planets_for_star(c)
     c.close()
     conn.commit()
@@ -93,8 +113,13 @@ def iter_stars(conn):
 
 
 def generate_stars(width, height, minimum_distance_between_stars):
+    unique_names = set()
     for (x, y) in poisson(width, height, minimum_distance_between_stars):
-        yield x, y, round(1 + expovariate(1)), generate_name()
+        name = generate_name()
+        while name in unique_names:
+            name = generate_name()
+        unique_names.add(name)
+        yield x, y, round(1 + expovariate(1)), name
 
 
 def how_many_planets():
@@ -103,15 +128,20 @@ def how_many_planets():
         n = round(gauss(5, 5))
     return n
 
+
+import sqlite3
+
 def generate_planets_for_star(c):
     star_id = c.lastrowid
     for ordo in range(1, how_many_planets() + 1):
-        c.execute('insert into planets(ordo, star) values (?, ?)', (ordo, star_id))
+        c.execute('insert into planets'
+                  '(ordo, star, bio_capacity, industrial_capacity)'
+                  ' values (?, ?, ?, ?)',
+                  (
+                      ordo,
+                      star_id,
+                      round(lognormvariate(10, 5)),
+                      round(lognormvariate(10, 5)),
+                      )
+                  )
 
-
-ROMAN_NUMBERS = [
-    None,  # no zero, but this aligns entries and their indicies
-    'I', 'II', 'III', 'IV', 'V', 'VI', 'VII', 'VIII', 'IX', 'X',
-    'XI', 'XII', 'XIII', 'XIV', 'XV', 'XVI', 'XVII', 'XVIII', 'XIX', 'XX',
-    'XXI', 'XXII', 'XXIII', 'XXIV', 'XXV', 'XXVI', 'XXVII', 'XXVIII', 'XXIX',
-    ]