Blank!

is a science fiction short story by American writer Isaac Asimov.

It was commissioned by Larry Shaw, editor of Infinity Science Fiction, as being the least inspirational title on which to base a story.

The story is about a scientist who is experimenting with time travel.

He persuades a reluctant colleague to join him on a journey in the machine he has developed.

As they fade into unconsciousness, they realize that 'where even eternity was meaningless, there would only be – blank!'