They apparently can explode directly as a supernova although that isn't easily predicted by theory.

Rock and dirt exploded with a tremendous blast directly in the face of the onrushing force.

Sally hit it with another grenade, and this one exploded directly in its face.

A pattern of 16 charges exploded directly over the boat, but Bang waited out her enemies.

Even so, the pain seemed to explode directly into his brain as he thudded into the ground.

But there was no sidewall to protect against the four laser heads which exploded directly ahead of her.

The first shell exploded high in the air directly above the gateway and the second one opened at the midway point.

The water directly behind him exploded into a churning mass.

It was all chaos and smoke after a car or truck bomb exploded directly beneath the window where I had once slept.

Then someone threw a grenade, which exploded directly in front of the beast.