<image>Given there are three points $$A$$, $$B$$, and $$C$$ on a number line representing rational numbers $$-24$$, $$-10$$, and $$10$$ respectively. Moving point $$P$$ starts from $$A$$ and moves towards endpoint $$C$$ at a speed of 4 units per second. Let the moving time be $$t$$ seconds.

$$(1)$$ Express the distance between point $$P$$ and $$A$$ using an algebraic expression of $$t$$: $$PA =$$ ______ ; The corresponding number of point $$P$$ is ______ ;
$$(2)$$ Moving point $$Q$$ starts from point $$B$$ and moves towards endpoint $$C$$ at a speed of 1 unit per second. If both $$P$$ and $$Q$$ start moving at the same time, find: After how many seconds will the distance between point $$P$$ and point $$Q$$ be 8 units?