I have encountered a puzzling situation when attacking a nest.  The first screen snapshot shows the fleet with which I am attacking and the second screen snapshot shows what I am attacking.  Logically, I should be able to destroy the nest with no problem, but the third screen snapshot shows a battle prediction that says that I will incur light casualties and they will incur no casualties.  How can that be?

When I attacked, the fourth screen snapshot shows that I did not do any damage to the nest and that I sustained extensive damage.  WHY? The fifth screen snapshot shows the Battle Report that shows that every one of my beam and missile attacks only had a value of 1 and that every one of them missed.  WHY?

Is this a bug or is there something that I am missing about what I need to be able to destroy this nest?