There have been incidents in both TOS and TNG where their respective Enterprises have been flung outside the galaxy against their will, due to alien intervention. For example, "By Any Other Name", "Is There No Truth in Beauty?", and "Where No One Has Gone Before".


Has Starfleet (or another Federation science agency) ever purposefully sent ships outside of the Milky Way galaxy?

Of course, there is the problem of sheer distance, but it's easy to make some rough comparisons. As we know, the Delta-Quadrant-stranded USS Voyager initially faced an enormous journey of 75,000 light years back to the Alpha Quadrant, which they estimated would take 70 years.

Looking at the following star chart,

the Terran Sun is only 30,000 light years from the galactic rim. Constraining ourselves to planar motion only (as Star Trek tends to do), that is still less than half of Voyager's journey.

It would be easy to imagine that there would be researchers and Starfleet officers who — relishing the chance to boldy go to the unknown — might sign up for an extremely long mission, even with an uncertain chance of returning to Federation space within their lifetime, and even in the face of possible impasses.

Are there any accounts of this type of mission, including ones within the extended universe? If so, what did they encounter?

(Note: I am not asking about unmanned probes.)

  • 1
    Within the main canon, not as far as I'm aware.
    – Valorum
    Jun 17, 2015 at 22:25
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    +1. It's also worth noting that, while cryogenics isn't fashionable anymore, the Federation is well-versed in the process of freezing and re-animating people, which might aid in ultra-long missions.
    – Nerrolken
    Jun 17, 2015 at 22:26
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    How would that work anyway? "Sol is only 30,000 light years from the galactic rim" be that as it may, but the next closest "thing" which isn't really interesting is another 30kly away whereas the next "thing" that indeed might be interesting (but is no galaxy) is about 160kly away. The next closest galaxy is 2.5Mly away. That's 2,500 years of travel given one of the fastest ships available by 2371.
    – Damon
    Jun 21, 2015 at 18:01
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    @Damon : Before we set the goal of going to the moon, we at least wanted to leave our atmosphere and reach space --- and so we did that. Leaving the galaxy is interesting in and of itself.
    – Praxis
    Jun 21, 2015 at 20:59
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    @Ellesedil : Thanks for asking --- I did intend Starfleet Command. The spirit of the question has to do with how interested Starfleet is in exploring outside the galaxy.
    – Praxis
    Apr 15, 2016 at 0:53

2 Answers 2


In canon, it would seem no

EU, according to Memory Beta, however indicates yes

The page linked above has the following to say

In 2265, Admiral Saylor of Starbase 33 ordered the USS Enterprise to explore the edge of the galaxy, and even probe beyond the barrier. However, upon the Enterprise's arrival at the barrier, nine crewmembers were killed and two others began to change into super-human beings, as Q once again tried to reach out to their minds. (TOS episode: "Where No Man Has Gone Before" and TNG novel: Q-Squared)

(my emphasis)

The same information is provided on Saylor's page on Memory Beta:

Around stardate 1312.4, Saylor contacted the Enterprise and ordered Kirk to take her out to the edge of the galaxy and, if possible, probe beyond.

According to the above page, the journey took about 15 days

So it seems that in relation to the Valiant mission there was intention to leave the galaxy in search of it if required.

The page I've linked indicates this is the only time that Starfleet intentionally sent a ship outside the galaxy, however this page may not be up-to-date.

  • I'm really sorry that I had to switch the acceptance, N_Soong. :-( Makyen's answer makes a very clear case for "Yes". But I'm glad that you at least got an extra vote or two from the renewed attention that the question was getting. :-) It's still an excellent answer, and I always appreciate the diligence to reach into Beta for material!
    – Praxis
    Mar 24, 2016 at 16:43
  • @Praxis no worries and I totally understand. I've yet to be convinced by the other answer that it was Starfleet's orders for the Enterprise to leave the Galaxy, but that's just my opinion lol Mar 24, 2016 at 22:56
  • Hehe, you know, I've been reading the answers, but not my original question! Based on a strict interpretation of my question, you might still be the winner (i.e. Starfleet's orders or Kirk's whim). I need to think about it some more and re-read everything...
    – Praxis
    Mar 24, 2016 at 23:18
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    @Praxis no matter which way you decide to go I'm sure it will be a wise choice and you'll hear no dispute from me over it 😀👍 Mar 24, 2016 at 23:20

In canon, Yes:

In TOS, "Where No Man Has Gone Before":

In the TOS episode "Where No Man Has Gone Before", the Enterprise is on a mission to probe beyond the galaxy. They are not flung outside of the galaxy against their will due to alien intervention, or any other reason. They leave the galaxy, or at least attempt to, because they intend to do so. Kirk gives the reason that "other vessels will be heading out here someday and they'll have to know what they'll be facing."

From a transcript of the episode, original Airdate: September 22, 1966, the opening Captain's log [in all the following quotes the emphasis is mine]:

Captain's log, Star date 1312.4. The impossible has happened. From directly ahead, we're picking up a recorded distress signal, the call letters of a vessel which has been missing for over two centuries. Did another Earth ship once probe out of the galaxy as we intend to do? What happened to it out there? Is this some warning they've left behind?

It was planned:

KIRK: We hope to learn from the recorder what the Valiant was doing here and what destroyed the vessel. We'll move out into our probe as soon as we have those answers. All decks, stand by.
MITCHELL: Department heads, sir. You wanted everybody on the Bridge before we left the galaxy. Jones.
SMITH: The name's Smith, sir.
SULU: Astro sciences standing by, Captain.
SCOTT: Engineering division ready, as always.
PIPER: Life sciences ready, sir. This is Doctor Dehner, who joined the ship at the Aldebaran colony.

Kirk orders the enterprise to leave the galaxy at warp factor 1. When the Enterprise attempts to "probe outside the galaxy", they encounter a "Force field of some kind":

KIRK: That's probably the best argument to continue the probe. Other vessels will be heading out here someday and they'll have to know what they'll be facing. We're leaving the galaxy, Mister Mitchell. Ahead, warp factor one.
SPOCK: Force field of some kind.
MITCHELL: We're coming up on it fast.
SPOCK: Sensor beam on.
KELSO: Sensor beam on, sir.
SPOCK: Deflectors full intensity.
KELSO: Deflectors full intensity.
SPOCK: Deflectors say there's something there, sensors say there isn't. Density negative. Radiation negative. Energy negative.
KELSO: Whatever it is, contact in twelve seconds.
KIRK: Gravitation on automatic. (consoles blow up) Emergency stations. All decks on fire alert. Neutralise controls. Kelso, put it on manual. Any radiation? Anything?
SPOCK: Negative!
KIRK: Helmsmen, take us out of here. (Dehner gets hit by an electric charge, then Mitchell) Helmsmen! (Kirk takes controls) Lateral power! (Spock takes over, Enterprise veers away) Take damage reports.

It is also referred to as a "barrier":

Captain's log, Star date 1312.9. Ship's condition, heading back on impulse power only. Main engines burned out. The ship's space warp ability gone. Earth bases which were only days away are now years in the distance. Our overriding question now is what destroyed the Valiant? They lived through the barrier, just as we have. What happened to them after that?

The Enterprise approaching the barrier:

Enterprise as it approaches the barrier

The Enterprise departing the barrier:

The Enterprise as it departs the barrier

(Yes, approaching and departing are different colors in the original.)

Was it ordered by Starfleet?
There is nothing in canon that explicitly states that the "probe out of the galaxy" was ordered by anyone higher in Starfleet than Captain Kirk. While they were already proceeding with their intent to "probe out of the galaxy", the Enterprise unexpectedly encountered the Valiant's "Old-style ship recorder". The encounter with the Valiant's "Old-style ship recorder" is not the cause for the Enterprise probing out of the galaxy. The Valiant's recorder is just a chance encounter while already on the way to probe out of the galaxy. The mission was not "Find the Valiant", or "Find how the Valiant was destroyed". The Valiant's ship recorder just happened to be detected on the Enterprise's way to "probe out of the galaxy".

That said, there is nothing in canon that says that the higher-ups in Starfleet ordered it. Kirk could have just decided to "probe out of the galaxy" on his own because "other vessels will be heading out here someday and they'll have to know what they'll be facing." If that is the case: Kirk is a captain in Starfleet. Thus, it was de-facto ordered by Starfleet. However, the episode implies that it was an official mission.

If the information in the reportedly "original" version of the introduction to "Where No Man Has Gone Before" (youtube1, youtube2) is accurate, the full original made it more clear that it was an official mission with some additional lines which appear to have been cut from the released version:

Enterprise Log, Captain James Kirk commanding: We are leaving that vast cloud of stars and planets which we call our galaxy. Behind us, Earth, Mars, Venus, even our Sun are specs of dust. A question: What is out there in the black void beyond?

Until now, our mission has been that of Space Law regulation, contact with Earth colonies, and investigation of alien life. But now... a new task. A probe out into where no man has gone before.

Ironically, almost immediately, we find out that some other man has gone there before: the crew of the Valiant.

Ordered by Admiral Saylor in the EU:
Memory Beta indicates that the order to probe outside the galaxy was given to the Enterprise by Admiral Saylor of Starbase 33:

In 2265, Admiral Saylor of Starbase 33 ordered the USS Enterprise to explore the edge of the galaxy, and even probe beyond the barrier.

Memory Beta credits this to the TNG novel Q-Squared. This statement is repeated on Memory Beta's Admiral Saylor page. However, if this is actually Admiral Saylor ordered, then the question that arises is: How did Admiral Saylor know there was a barrier? I have not read Q-Squared, and nothing that is stated in "Where No Man Has Gone Before" indicates that Kirk knew in advance that there was a barrier. Thus, I am assuming that Memory Beta has gotten the wording somewhat wrong. It probably should be just "beyond the galaxy."

It appears this is at least partially covered in the book Tos #86 Constitution: My Brother's Keeper Book Two. I don't have the book, so I've pieced together a quote using Google Books, which, unfortunately, does not have the needed page as a preview:

"As you can imagine," said the admiral, "Starfleet Command has been eager to hear the results of your mission, Jim. They've sent Captain Damion to conduct the debriefing."
He gave you new orders—to explore and even exceed the boundaries of our galaxy."
Kirk nodded. "That's correct. And , of course, we followed those orders to the letter."
"You reached the limits of our galaxy?"

Does the Enterprise actually get out of the galaxy?
There is no statement that the Enterprise actually left the galaxy. However, it is stated that the Valiant did get about a half a light year beyond the galaxy:

SPOCK: Swept past this point, about a half light year out of the galaxy, they were thrown clear, turned, and headed back into the galaxy here. I'm not getting it all. The tapes are pretty badly burned. Sounds like the ship had encountered some unknown force. ...

One would expect that the two centuries newer Enterprise could do at least as well with respect to how far outside the galaxy they were able to probe.

The distance to the edge of the galaxy and time taken to get there:
Nothing is mentioned about the distance they traveled to "probe out of the galaxy".

Out of universe: This was the 2nd pilot episode. At that time, the writers probably had very little concept of the distance from the Earth to the "edge of the galaxy", the speed of the Enterprise traveling at warp, etc. Assuming the Enterprise traveled in planar motion only for the 30,000 light years you mention, it is not something that can really be reconciled with respect to the 70 years that Voyager would take to go 75,000 light years, in a much faster ship. At the time "Where No Man Has Gone Before" was written and filmed they had, at best, only just begun to think about these types of issues. Things has gotten significantly more fleshed out in the almost 30 years between the original series and the beginning of Voyager.

  • 1
    Was the Enterprise actually ordered by Starfleet to cross the galactic border, or to retrieve the Valiant? Because if the Enterprise wasn't expecting to encounter the ship and Starfleet did not otherwise order the Enterprise to cross the galactic border, then this doesn't really answer the question.
    – Ellesedil
    Mar 21, 2016 at 8:15
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    They unexpectedly encountered the Valiant's "Old-style ship recorder" while they were already on their way to "probe out of the galaxy as we intend to do". The Valiant is not the cause for them probing out of the galaxy, it is just a chance encounter while already intending to probe out of the galaxy. That said, there is nothing in canon that says that Starfleet ordered it. Kirk could have just decided to go do it on his own. On the other hand, If that is the case, he is a captain in Starfleet, and thus it was ordered by Starfleet. The episode implies that it was an official mission.
    – Makyen
    Mar 21, 2016 at 8:32
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    Does anyone else find it interesting that the Enterprise's deflectors can detect a force field twelve light seconds away? That's 3.598 million kilometers (2.235 million miles)! Mar 21, 2016 at 14:11
  • 1
    A great analysis of a classic episode. Star Trek was always about big ideas, absolute power corrupts absolutely, the nuts and bolts of 'canon' came later.
    – sfhq_sf
    Mar 21, 2016 at 14:15
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    @Makyen : Sorry to dither on acceptance. As N_Soong pointed out in the comments below his answer, my original question was really about orders from Starfleet. If you can prove this, I will assign acceptance (again)! :-)
    – Praxis
    Apr 14, 2016 at 4:58

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