A straight forward case of a fleet being left unattended too long with neither the raiding score or other indicators changing. After an hour or so, it was time to take this one down:

The attacker has won the battle !
You receive 29.166.667 units of Metal, 6.174.937 units of Crystal and 3.738.656 units of Deuterium.
The attacker has lost a total of 0 units.
The defender has lost a total of 754.714.500 units.

Additional loot on the planet to the tune of 90 million metal and 35 million crystal with sundry deut was cleaned up with a subsequent raid.

nice hit Dr J Glotr Prometheus

Its all good. Life comes first. Don't get used to it