You can send 2 Dark Matter Investigation fleets to your own moon at the
Your base chance in the dark matter investigation mission is 30%. The maximum chance is 50%. Each dark matter collectorship in the fleet increases your chance by 0.25%. For example, your total chance for 10 ships is 32.5%. (30 + 0,25x10)
You can send 80 ships for maximum chance. Only Dark Matter collector ships have to be in the fleet.
Notice: The fleet that finds dark matter is destroyed by the system.