Blank!
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Blank! is a science fiction short story by 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. Harlan Ellison and Randall Garrett were also invited to submit stories based on the same title; all three were published in the magazine in June 1957.
A scientist is experimenting with time travel and persuades a reluctant colleague to join him on a journey in the machine he has developed. Despite the inventor's protestations that nothing can go wrong, something does go wrong, and the two travellers find themselves stuck in non-time, between two time-particles.
As they fade into unconsiousness, they realise that 'where even eternity was meaningless, there would only be - blank!.