Send the units with 'Recycling' ability on coordinates where you see or expect to see space debris, and they will be collected and transformed into useful resources. Recycling takes some time, the collection speed for one unit is shown below. The more units you send, the faster they can collect all debris. If enemy battle fleet arrives on the coordinates where your recyclers without aggression option turned on , they will return automatically. If you sent the fleet to collect debris with aggression option turned on, then in the case of the arrival of the enemy fleet, a battle will occur and the debris will be collected by the winner or by all the fighters if the battle ends in a draw. Allies can recycle debris on the same coordinates simultaneously. In case of destruction of units with collected debris, 50% of the resources from the holds fall back to the coordinates.