The meeting

If I can have a meeting with my grandparents in my night dream
then I can find them in another space of the planets.
I have never been on another planet in real life yet.
I know my grandparents live in a small house there.
They love their funny brown dog.
They put a big bouquet of flowers in a blue vase in the morning.
(Does that planet have a morning? I do not know.)
They walk along paths of their memories every day.
If they meet me on the path then I visit them in my night dream.