plasma

Bedrock, melts into seething hot plasma at tens of thousands of degrees celsius.

In a millisecond, a ball of plasma hotter than the Sun appears and grows in a fireball to more than 2 kilometres across.

Once the oven is turned off, the plasma dissipates.

The one at the center of the BL Lacertae galaxy is devouring so much material that it produces jets of plasma accelerated to nearly the speed of light.