i remember a sci-fi book about how humans used a particle that wasn’t very big, maybe a few square meters in size, it had quite literally a time stasis field surrounding, in effect absolutely nothing could hurt it, not even a journey through a sun.
This object was accelerated at nearly the speed of light and bombarded a planet, the results were highly spectacular.
I love sci-fi. The object you described would literally turn a planet into an asteroid belt.