[Suicide Junkie]

That would be a display glitch.
Weapon platforms with lots of shields have more hitpoints than the planet accounts for.

So if a platform has taken 5000 damage (including shields) and the planet thinks it has only 500 hitpoints (armor & components)...

When the weapon platform is destroyed, the planet will go from 5000/%bignumber% damage to 500/%bignumber% damage as the partial damage goes away and only one platform is destroyed.

The display says ok, you went from 5000 to 500, so that is -4500 damage.


In summary, it is nothing to worry about.