Moon

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A moon is a celestial body that can be found in orbit around an inhabited planet. It is the home of several specialty buildings, and can be used in many ways similarly to a colonized planet. It disappears upon abandoning a planet, or when a colony is removed for inactivity.

Moons can also be abandoned independently of the planet.

Starfleet Hired Guns and Universe 3 do not have moons. In Hired Guns, its territories take the place of moons in the user interface.

In universes with moons since Nova (i.e., Nova, Conquest, and Eradeon) moons can also be destroyed by a fleet of Zeus.


Contents

Evaluation

Advantages

  • Specialty buildings: Lunar Dock, Oracle, Warp Gate, and Lunar Dock.
  • Oracles cannot scan moons.
  • Resources may be stored and consumed via building, or through a Shipyard.
  • Moons do not produce resources and have no cargo capacity: Infinite resource values can be placed on the moon to allow continued resource production on planets without building ships to hold the resources.
  • Unlike ships, moons can only be destroyed by Zeus class ships.

Disadvantages

  • Mines cannot be built.
  • Missions cannot be run from the Moon.
  • Workers cannot be transported to, or used on a Moon.
  • Mines, [Research Lab]], Factory, Foundry, Resource Den, Droids, and Helios Class Solar Satellite cannot be built on a moon.
  • Ships and resources sent to a Moon are still visible to probes, and vulnerable to attacks, just as if they were on a planet. They would have to be in transit to keep them safe.
  • Unlike planets, moons can be destroyed by a fleet of Zeus.

Special Note

  • Planets and Moons share a single location for Debris. Debris resulting from a battle taking place at a moon will be found on the Galaxy screen adjacent to the associated planet, not the moon itself. Harvest missions sent to either the planet or the moon will collect the debris.

Appearance

Moon appearance on the galaxy screen.

Moons appear as a blank spot in the number sequence from the galaxy view.

Formation

Moons can only be formed from the debris of large battles. For every 150,000 debris produced in a battle, there is a 1% chance that a moon will coalesce. The maximum chance of moon accretion is 20% (3,000,000 debris).

The calculation is performed on a per-battle basis; any debris in orbit at the time of a battle is not included in determining if a moon is formed.

Because the moon is the result of battle, the defending planet is the owner of any moon that is formed. Moon creation is immediate after the battle, and does not consume the debris field; therefore, collecting the debris field will not interfere with the process.

Some users claim that since the debris is left from the moon formation, the moon must actually be made from the 70% of ore and Crystal, and all the hydrogen which does not form debris. These lost materials are sometimes jokingly referred to as "Cheese."

Moons generate with exactly 1 (one) building field, which must be used for a Lunar Base Level 1.

Buildings

The following are the ONLY building types available on a Moon.

  • Lunar Base is required in order to build other structures on a moon. Each level provides three additional building fields on the moon, but occupies one, leaving a surplus of two available building fields.
  • Oracle can only be built on a moon. It is a long range telescope that is capable of detecting most fleet movements.
  • Warp Gate can only be built on a moon. When you have more than one, it allows for the owner to instantly transfer ships between warp gates.
  • Shipyard works like a shipyard on a planet. Building one allows you to build ships and defenses.
  • Capitol works like a capitol on a planet.
  • Lunar Dock can be used to deploy a Hephaestus Class Attack Platform back to your moon.

Note that the moon is considered a separate entity from the planet it orbits. Any shipyards, planetary defenses, and capitols built on one do not affect build times and defensive capacities of the other. Anti-ballistic Missiles built on a planet do protect its moon.

At any time, should you have used all current building fields, you will receive the following warning on the moon's Buildings page:
All fields on the moon have been used up. If you wish to continue building, you will have to tear down one building's level and then upgrade the Lunar Base to gain more fields.

Obtaining

Ships per 150,000 debris and corresponding chance of moon formation. (This table does not apply to Starfleet Commander Conquest it has unique ship and defense debris rules)

Ship 1% 2% 3% 4% 5% 6% 7% 8% 9% 10% 11% 12% 13% 14% 15% 16% 17% 18% 19% 20%
Empusa Class1000200030004000500060007000800090001000011000120001300014000150001600017000180001900020000
Hermes Class50010001500200025003000350040004500500055006000650070007500800085009000950010000
Helios Class25050075010001250150017502000225025002750300032503500375040004250450047505000
Atlas Class1252503755006257508751000112512501375150016251750187520002125225023752500
Curetes Class1252503755006257508751000112512501375150016251750187520002125225023752500
Hercules Class4284126168210252294336378420462504546588630672714756798840
Artemis Class1252503755006257508751000112512501375150016251750187520002125225023752500
Apollo Class591181772632953544134725315906497087678268859441003106211211180
Charon Class6312618925231537844150456763069375681988294510081071113411971260
Zagreus Class6312618925231537844150456763069375681988294510081071113411971260
Dionysus Class326496128160192224256288320352384416448480512544576608640
Poseidon Class1938577695114133152171190209228247266285304323342361380
Pallas Class163248648096112128144160176192208224240256272288304320
Gaia Class1734516885102119136153170187204221238255272289306323340
Carmanor Class14284256708498112126140154168182196210224238252266280
Athena Class918273645546372819099108117126135144153162171180
Ares Class714212835424956637077849198105112119126133140
Hades Class81624324048566472808896104112120128136144152160
Prometheus Class5101520253035404550556065707580859095100
Thanatos Class 1 2 3 4
Zeus Class 1 2
Hephaestus Class 1
  • NOTE: The rightmost columns project the rounding from the 1% value and so overstate the requirement slightly (8.3 Athena for 1% is indeed 9, but at 20% the correct answer is 167 not 180)

Probability

The probability of getting a moon is always a maximum of 20% on any given chance. The more attempts you make however, the greater the likelihood you will succeed in creating a moon. Unfortunately five 20% attempts will not guarantee you a moon; the odds of probability are closer to 67%. The same can be said with 21 20% attempts. Even though the odds of probability state you have a 99% chance of gaining a moon, every attempt still has a 20% chance of creating a moon. Using a lunar commander will double the base percentage chance of a moon forming.

Keep in mind that the chance is always random. The game doesn't keep track and calculate how many attempts you've made in the past. Below is a chart that outlines the probability.


Probability of gaining a moon on 'n' attempts
Number of
attempts
Percent Chance of
gaining a moon with 20% attempts
Percent Chance of
not gaining a moon with 20% attempts
Percent Chance of
gaining a moon with 10% attempts
1 20 80 10
2 36 64 19
3 49 51 27.1
4 59 41 34.39
5 67.23 32.77 40.95
6 73.79 26.21 46.86
7 79.03 20.97 52.17
8 83.22 16.78 56.95
9 86.58 13.42 61.26
10 89.26 10.74 65.13
11 91.41 8.59 68.62
12 93.13 6.87 71.76
13 94.50 5.50 74.58
14 95.60 4.40 77.12
15 96.48 3.52 79.41
16 97.19 2.81 81.47
17 97.75 2.25 83.32
18 98.20 1.80 84.99
19 98.56 1.44 86.49
20 98.85 1.15 87.84
21 99.08 0.92 89.06
35 99.96 0.041 97.5
n ( 1 - (0.8)n ) * 100 (0.8)n * 100 ( 1 - (0.9)n ) * 100

Moon Size

In universes since Starfleet Commander Nova, moons are assigned a size at the time of formation based on the size of the debris which created it. (Moons in older universes also have a size assigned, but the number is meaningless.)

Moonsize Diameter:
= FLOOR ( (x + 3 * Base Moon Percentage Chance ) ^ 0,5 * 1000 )

x is a number between 10-20 (10 <= x <= 20) where all x are equally likely to occur

The minimum diameter is 3,605 and the maximum diameter is 8,944. You should always seek the largest possible moon, so it will not be easily destroyed. At the highest probability of 20% moon formation a moon always receives a diameter of at least 8,366.

Moon Size Statistics
Moon Chance Average Size
Minimum
Possible lunar sizes
Maximum
1 % 4,225    3,605    3,741    3,872    4,000    4,123    4,242    4,358    4,472    4,582    4,690    4,795   
2 % 4,569    4,000    4,123    4,242    4,358    4,472    4,582    4,690    4,795    4,898    5,000    5,099   
3 % 4,888    4,358    4,472    4,582    4,690    4,795    4,898    5,000    5,099    5,196    5,291    5,385   
4 % 5,187    4,690    4,795    4,898    5,000    5,099    5,196    5,291    5,385    5,477    5,567    5,656   
5 % 5,469    5,000    5,099    5,196    5,291    5,385    5,477    5,567    5,656    5,744    5,830    5,916   
6 % 5,737    5,291    5,385    5,477    5,567    5,656    5,744    5,830    5,916    6,000    6,082    6,164   
7 % 5,994    5,567    5,656    5,744    5,830    5,916    6,000    6,082    6,164    6,244    6,324    6,403   
8 % 6,239    5,830    5,916    6,000    6,082    6,164    6,244    6,324    6,403    6,480    6,557    6,633   
9 % 6,476    6,082    6,164    6,244    6,324    6,403    6,480    6,557    6,633    6,708    6,782    6,855   
10 % 6,704    6,324    6,403    6,480    6,557    6,633    6,708    6,782    6,855    6,928    7,000    7,071   
11 % 6,924    6,557    6,633    6,708    6,782    6,855    6,928    7,000    7,071    7,141    7,211    7,280   
12 % 7,138    6,782    6,855    6,928    7,000    7,071    7,141    7,211    7,280    7,348    7,416    7,483   
13 % 7,345    7,000    7,071    7,141    7,211    7,280    7,348    7,416    7,483    7,549    7,615    7,681   
14 % 7,547    7,211    7,280    7,348    7,416    7,483    7,549    7,615    7,681    7,745    7,810    7,874   
15 % 7,743    7,416    7,483    7,549    7,615    7,681    7,745    7,810    7,874    7,937    8,000    8,062   
16 % 7,934    7,615    7,681    7,745    7,810    7,874    7,937    8,000    8,062    8,124    8,185    8,246   
17 % 8,121    7,810    7,874    7,937    8,000    8,062    8,124    8,185    8,246    8,306    8,366    8,426   
18 % 8,304    8,000    8,062    8,124    8,185    8,246    8,306    8,366    8,426    8,485    8,544    8,602   
19 % 8,483    8,185    8,246    8,306    8,366    8,426    8,485    8,544    8,602    8,660    8,717    8,774   
20 % 8,658    8,366    8,426    8,485    8,544    8,602    8,660    8,717    8,774    8,831    8,888    8,944   

The Moon Chance portion of the formula for moon size does NOT take into consideration the lunar architect.

Moon Destruction

In Nova, Conquest, and Eradeon a moon can be destroyed by a fleet of Zeus. Before Zeus can destroy a moon, they must defeat all fleets and defenses on the moon. There are 4 possible outcomes for a moon destruction mission:

  1. Moon survives, Fleet survives
  2. Moon survives, Fleet is destroyed
  3. Moon is destroyed, Fleet is destroyed
  4. Moon is destroyed, Fleet survives

If the fleet is destroyed a debris field is created but there is no moon formation chance. If the moon is destroyed all fleet tasks from it will be diverted to the planet.


Formulas for Destruction

Chance to destroy moon (in percentage)= Moondestroyformula.png


Chance the Fleet is destroyed (in percentage)= Fleetdestroyformula.png


There is almost always a greater chance that a fleet with a single Zeus will be destroyed than the moon. Adding Zeus raises the probability that the moon will be destroyed, up to 100%. However, assuming defending units on a moon can be defeated by a single Zeus and there is no limit on the number of attempts that can be made, additional per-attempt Zeus increase the expected cost of moon destruction.


In the following table

  • Moon Sizes are selected from the outside (left and lower) edges of the above moon size table. These values are generally repeated several times in the interior as well.
  • The Chance of Fleet Destruction is the chance that the fleet is destroyed in a particular attempt, as given in the above formula. It is independent of fleet composition.
  • The Expected Attempts for Single Zeus is the expected (average) number of times a single Zeus would have to attempt moon destruction before the moon is destroyed. (As it turns out) it is simply the inverse of the above chance to destroy moon with Zeus = 1. This is by no means a guarantee; as the number of attempts required with a given number of Zeus follows a geometric distribution, the variance is very large. It can only be said that the actual number of attempts required will usually be between 1 and twice the expected value listed in this column.
  • The Expected Zeus Lost Using Single Zeus is the product of the previous two columns, multiplying the expected number of attempts by the probability that the Zeus will be lost in each attempt.
  • Zeus required for Certainty is (100÷(100 − MoonSize½))2, the number of Zeus required for the chance to destroy moon to meet or exceed 100%.
  • Expected Zeus Lost at Certainty is the product of the second and fifth columns, multiplying the chance of fleet loss by the number of Zeus in a fleet that has 100% chance of destroying a moon of that size. Actual fleet loss is, of course, all or nothing.


Expected Cost of Moon Destruction
Moon Size (selected) Chance of Fleet Destruction Expected Attempts for Single Zeus Expected Zeus Lost Using Single Zeus Zeus Required for Certainty Expected Zeus Lost at Certainty
360530.0%2.50.7572.1
400031.6%2.70.8682.5
435833.0%2.90.9793.0
469034.2%3.21.09113.8
500035.4%3.41.21124.2
529136.4%3.71.33145.1
556737.3%3.91.47166.0
583038.2%4.21.61186.9
608239.0%4.51.77218.2
632439.8%4.91.94249.5
655740.5%5.32.132811.3
678241.2%5.72.333313.6
700041.8%6.12.563815.9
721142.5%6.62.824418.7
741643.1%7.23.105222.4
761543.6%7.93.436227.1
781044.2%8.63.807432.7
800044.7%9.54.249040.2
818545.2%10.54.7511150.2
836645.7%11.75.3613863.1
842645.9%12.25.5914968.4
848546.1%12.75.8416174.2
854446.2%13.26.1117580.9
860246.4%13.86.3919188.6
866046.5%14.46.7020896.8
871746.7%15.17.04228106.4
877446.8%15.87.40250117.1
883147.0%16.67.80276129.7
888847.1%17.58.24306144.2
894447.3%18.48.71340160.8

Abandoning

Moons may be abandoned, like planets, from their Home page.

When moons were introduced, it was not possible to abandon one without abandoning the associated planet. However, moons are expensive (especially at the time), so the circumstances where one would want to abandon one were extremely rare, if nonexistent. (An exception might be if one accidentally queued a large number of units at the moon's shipyard, and then had a need to enter vacation mode.)

With the introduction in Nova of destructible moons, and moon sizes, a way to abandon moons was also made available. Presumably this was to allow a player to abandon a small moon to attempt to gain a larger one.

Moon abandonment is still rare, but the same user interface is used to detach Hired Guns territories from the associated planet, which is a regular occurrence.


See Also

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