#you could theoretically use the pulse engine to travel between star systems too

[darthkvznblogs]

Regarding extragalactic travel: is there anything preventing Milky Way races from developing their own version of the tech (not in terms of politics but like space anomalies around our galaxy)? Do other galaxies have it or is it just a Galra and Gem thing? And give Allura's portals, could a space bridge or the Bifrost allow for extragalactic travel?

There's nothing physically preventing extragalactic travel to and from the Milky Way. FTL technology aside from the Galvan Transportation Network exists, it's just the Mass Effect thing - there's this bonkers established FTL method that practically lets you skip across vast distances in the blink of an eye, which discourages development of other forms of travel. The "regular" FTL travel is simply too slow to reasonably consider travelling to other galaxies.

That's why the Tesseract drive Mar-Vell was trying to develop was so important - it would've put the Skrull refugees beyond the reach of the Kree Empire.

Cybertronian Space Bridges are point to point, and only exist between Cybertronian colony worlds; they do allow for nearly instantaneous travel, but in order for one to be used for intergalactic travel, someone would need to bite the bullet and make the trip to the target galaxy, then build the Space Bridge's endpoint there.

The Bifrost doesn't really have a range limit (hell, most of the Nine Realms don't exist as part of normal space), but good freakin' luck convincing Odin to let you use it hahaha