But in certain cases communication between universes is incomplete or even nonexistent.

Of course, the conditions under which movement between universes might be possible are not known.

Not the sort of destination to recommend travel between universes.

"That doesn't sound like the kind of person who jumps between universes."

If we show up before that first meeting between universes, then what happens to the Gate project?

"What promise can a phantom make which will withstand the distance between universes?"

They are all involved with their particular Earth's plans to develop technology that would allow travel between alternate universes.

He wasn't scared of the Void; he'd been here before, between universes.

A spirit or a thought can travel free between universes.

Could there be concentration camps here in the void between universes?