I mean parallel worlds and universes. There are a number of alternative planet Earths, that are similar but not identical. I've visited a few. You are from an Earth. Others are from different Earths. 1832 on one Earth might be very different from 1832 on another Earth.
You can keep it hidden if you're concerned about affecting the culture. That's what I do when I visit versions of Earth that don't have smartphones or that don't have them yet.
No one has to be alone on this station, even when they're through the doors.