During the Disney+ series, Ahsoka, part of the plot involves Ahsoka utilizing what she (and other characters later) calls Star Whales.
These Star Whales are able to access hyperspace and transport Ahsoka and her ship to another galaxy to pursue the antagonist. Once there the group of Star Whales are besieged and make a hasty exit again through hyperspace.
I don't recall an explanation being given in the Ahsoka series about how the whales are able to access hyperspace, but I know that this series continues plot lines from Star Wars: Rebels animated series (which I have not seen).
I suspect that the ability has something to do with the Force, but is there any explanation given within show canon or from other sources (interviews, encyclopedias, novels, etc.)?