What's another word for wormhole?

Could you please enlighten me with an alternative term for "wormhole"? I've been trying to find a synonym for it, but it seems quite unique in its description. I'm curious if there's another word that could be used interchangeably in a scientific or astronomical context, perhaps something that captures the essence of a bridge or tunnel connecting two distant regions of space? Would you be able to suggest a word that fits this description? I'm eager to expand my vocabulary and appreciate your assistance.