When I say massive, I mean on the order of a small moon. Or a large moon. Navigational deflectors can't repel impacts of that magnitude.
And Trek tech can't really accelerate such objects. At least, not the tech that Starfleet has.
He fears his fate too much, and his reward is small, who will not put it to the touch, to win or lose it all.
-James Graham, 1st Marquess of Montrose
Satomi by Elagune