For me, Bova’s main achievements were taking over Analog and turning it from a rag full of pseudoscience published by the most loathsome person in SF, into something like an Actual Science Fiction magazine.
And a long string of his hard SF novels, from Kinsman Saga, Colony, and Mars.
But my favorite thing Ben Bova ever wrote is a short, so good that I forgive its use of “telepathy” as a narrative device, “Stars, Won’t You Hide Me”, collected in:
The Final Battle had been lost.
On a million million planets across the galaxy-studded universe, mankind had been blasted into defeat and annihilation.
The Others had returned from across the edge of the observable world, just as man had always feared.
They had returned and ruthlessly exterminated the race from Earth.