after vs behind

[jctgf]

"the red book after/behind the blue one on the shelf."
what is the right way, please?
is it right that "after" refers to time while "behind" is related to space?
thanks

[Snowcake]

behind is correct in your sentence.

is it right that "after" refers to time while "behind" is related to space?

I'd say: not quite.

Examples for behind relating to time:

The bus was 20 minutes behind time. (the bus was late)

(also: He is completely behind the times (He is old-fashioned))

Example for after relating to location:

Our house is the next house after the library.

Hope that helps
Snowcake