QUESTION: 
Do you think the spot on Neptune will ever come back?  Will it be the 
same?

ANSWER from Heidi Hammel on May 14, 1996:
My guess is that Neptune will have another Great Dark Spot in the future.
But will it be a new one, or the old one come back again?   I don't know!
The only way to find out is to take pictures of Neptune and study the
pictures very carefully.  By making comparisons between the new pictures
and the old pictures, we will try to figure out just how Neptune's
atmosphere is changing.  But right now, we are still in the dark.

This is my job - to try to answer questions like these.  Doing scientific
research is like solving a mystery, or putting together a puzzle, except
the scientist don't know what the final answer or picture really is!