[Time Fire / Quantum Ranger]

>In several episodes of PRIS, "Satellite Search", 'The Rangers' Mega
>Voyage" & "The Enemy Within" Alpha 6 pilots the Astro Megazord in
>battle; who was piloting the Astro MegaZord (Galaxy Mega) in the
>original Mega Ranger versions of these episodes ?

The Galaxy Mega was a space station of sorts, it had a full complement
of crew, in addition to the 5 megarangers.

>
>Did it battle against Darkonda in the sentai version of the "The
>Rangers' Mega Voyage" on auto-pilot, while the rangers retrived Mega
>Voyager, or something ?

No, the aforementioned crew piloted it.


>
>And secondly, how was Mega Silver introduced in Mega Ranger & where
>did he originally get Mega Winger from ?

A guy (i don't know his name) created a prototype suit which would
only stay powered up for 7 minutes (i think?),