Eventually, as the star shrinks back to a white dwarf before its final extinction, they are left abandoned in the dark and cease to be.

He sat back, feeling the ache, the strain of past activity, the reaction at his near-brush with final extinction.

The final extinction of the Caribbean monk seal was triggered by two main factors.

"And that severe a decline in only forty years would tend to indicate that final extinction cannot be far off."

"And, they say, the only alternative is a relapse through chaotic barbarism-to final extinction."

And all of them, each in his own way, alone with the thought of the final extinction.

Others think this represents the final extinction of desire.

Still, the final extinction must come at last.

How could he ask anyone else to endure an interminable wait, especially one likely to end with final extinction?

They were passing through, heading for the unknown, the last question, birth canal or final extinction.