Based on what we know now. After only a few hundred years of inventing machines that are still very basic.
Time and space are likely easily manipulated with the right technology. Technology that overcomes classical physics unlike we’ve invented so far.
Just over 100 years ago most people said a flying machine was impossible. Then they said space flight was impossible. Then a few decades later man walked on the moon.
Imagine an Alien race with millions of years of exponential innovation. We simply cannot comprehend such a thing
imagining civilizations that are a few hours or days ahead, and what they have for moving really fast, is the stuff of my dreams.