It Will Rain For A Million Years Lyrics

Lyric discussion by CleverConveyence 

Cover art for It Will Rain For A Million Years lyrics by Porcupine Tree

It sounds like it's someone fleeing the planet as it's flooding. He looks down at his home, and sees the land being enveloped in water (watched the planet slowly turning blue).

So now he travels the galaxy, holding within his mind the story of his faded planet, trying to find a home, seeing many planets along the way, but he never finds it, searching forever.