He spied me and I didn't think anything about it, but then I see more red on my screen and look my fleet just got back down. The rest is history

The defender has won the battle !
Winnings: 0 0 0
Attacker Loss: The attacker has lost a total of 305.505.900 units.
Defender Loss: The defender has lost a total of 28.902.500 units.
Debris Field: 86.410.440 110.538.900
Info: A moon has formed around the planet [5:68:5] !
Info: The probability of creating a moon is 19%
Info: Click here for detailed report

My neglect is your gain. Well played.