Hi. I wondering where can go in the game e.g. quests, construction panel, etc in order to build a special building such as moon base. I have the requirements but can't find the option. Thanks in advance. 

My capital planet is a moon planet and from the start couldn't build a moon base. As for attacking to my planet can't do that because there isn't any option. There isn't any hidden construction panel in order to reveal it and to build my base? 

Hello C_K,

your capital planet does not have a moon.
This is what it looks like when there are moons around a planet: http://prntscr.com/otkk6z

You first need to get a moon.
A moon can be formed at the end of a battle on one of your planets where a lot of debris was dropped. Per 250 000 debris dropped you get a 1% chance that a moon forms. The maximum chance is 25% with 6 250 000 total debris dropped.

Thanks for the replay Tii. In conclusion, my options are these. I need to let debris 6.250.000 to drop (or even 25.000.000 for 100% chance) in order to form a moon not knowing how much time is needed or to find a planet with a moon in it, something rare in this game in order to colonize it. Tough choice... Thanks for the help (in general).

You can't find planets that already have moons.
You need to get your own.

You can let more than 6 250 000 debris be dropped but it will NOT increase the chance above 25%. 25% is the MAXIMUM CHANCE per battle.

Thank you very much for your help.