I need help finding a movie from the 80s?

I think it was an 80s movie,it was about a kid who finds this spaceship and he gets in it,his parents dont know where he is,and he travels through time in the spaceship,with these creatures and this weird poll thing that talks to him,and when he goes back through time,his parents dont live i nthe same house anymore,and he doesnt know its been a decade,whats this movie called?