In the framework of the 100 Circles research, we have discovered, with the help of a "magic query" developed by Aleš, three far-away branches, containing profiles connected to, but very far from, most of the Tree.
WARNING : Check updates, things have been moving quite fast in this space.
The furthest away is Ali Al Maghrawi (this is the best transliteration I could figure, anyone proficient in Arabic is welcome to propose a better one) sitting at the far end of a long branch of profiles with only Arabic script names, no date, no place, no source whatsoever, created from a GEDCOM import back in 2011, by a member of whom account seems to be closed.
As far as possible from Ali, at 165 degrees, lies Philipp Wirtz, and a handful of private cousins extending the branch two degrees further. This branch has been created by GEDCOM import back in 2011, and the PM has been inactive since 2013.
[edited 2020-12-05 : All this branch should be reconnected by tomorrow and brought back by 30-35 to the center]
As far as possible from the path linking the two above, lies among others Seth Lazenby, at 156 degrees from Ali and 142 from Philipp. Seth is an ancestor of his PM, Adam Dennehy who created this branch in May 2020, has not been active since but hopefully might be responsive.
[edited 2020-12-05 : The profile of Seth Lazenby has just been merged and brought much closer to the center, thanks to Karen Lowe. Tomorrow when the Connection Finder data are updated we'll know who is taking his place. Stay tuned!]
To figure how far those three branches are from the bulk of WikiTree, our anchor Henry VIII is 85 degrees from Ali, 83 from Philipp and 78 from Seth. Good old Henry seems to sit quite close to the center of this triangle, at about equal distance from each of the three Outer Rim extensions. Does that mean he's close to the center of the Galaxy? And what does "center" mean, by the way? Tricky questions, about which we had fascinating exchanges in the 100 Circles team. You are welcome to join and bring your input.
For fun, or help us to move forward in this exploration, you can find out your own distances, or the distance of your favourite profile, to/from the Outer Rim using the Connection Finder. Can you beat Henry VIII? If you are closer than him from one summit of the triangle, you are likely to be further from one or two others. Compute the sum of the three distances, which is 246 for Henry VIII. Can you beat this?
In the due course of tree curation, those three branches could be either brought closer or disconnected by cutting dubious unsourced connections. The latter should certainly be a good idea for Ali's branch at least, if someone knowledgeable can care. As for the two others, they can certainly be brought closer by discovery of new shortcuts.
If any of this happens, don't worry. Those three Outer Rim landmarks will be replaced by closest ones which will appear on the new horizon, and the fun will go on.
edited 2020-12-06 : After reconnection of Philipp and Seth branches, the new Outer Rim triangle has got smaller, but is now a pentangle pentagon (oops) with the following new summits :
Maurice Berkeley (abt.1271-1326) is the exact center of the new triangle, at distance 78 from the five Outer Rim summits. All other connected profiles are less than 78 degrees from Maurice (check your own!)
edited 2020-12-07 : The Pool branch has been reconnected closer, the triangle has flattened to a single line. Maurice Berkeley is still standing in the middle.