I've spent a lot of time reading [link] Then it occurred to me. In SGA, they can cross the vast void between the Pegasus and the Milky Way galaxies in a few weeks. And that's no small feat. Also they can travel in an instant with the gates.
Plus in StarGate, if we add the end of the SG-1 series, humanity got the Asgard Core, a device containing all knowledge of the Asgard race. And with that, creating everything ST and SW have, is just a matter of time.
Oh, time. Have I mentioned time-dilation, which is also a regular in StarGate?