Star Trek Voyager provided more than one first in the Star Trek universe as the little ship entered a wormhole and found itself lost in the delta quadrant.
Even though it's science-fiction, the wormhole theory is a popular one that many theorize could also allow travel into other dimensions or parallel worlds.
A vibrational pattern creates a wormhole that's guided by mathematical calculations through space to a specific physical location within the same timeline.
Upon returning to the alpha quadrant, Sisko learns that the Bajorans worship the aliens inside the wormhole, calling them the ancient Prophets.
Humans are then able to step through the time portal and travel great distances through space within a few seconds via the wormhole.
The wide story arc in Deep Space Nine centers around the Bajorans, the wormhole, and the mysterious Founders of the gamma quadrant.
In effect, this wormhole bridge could remain open forever to allow non-stop travel to and from whatever destination you desire.
Starfleet assumed joint control of the station along with the Bajoran people and moved it to monitor the nearby wormhole.
Saul-Paul can also tell you how Sagan wrote Contact, and his role in it leading to Kip Thorne's seminal wormhole paper.
The Bajoran wormhole is a unique phenomenon where two distant points of the galaxy are connected by a sub-space tunnel.