Those of you who have read "Skull and Crossbows" know of Terrigimar, the space faring lich. Terrigimar conducts research on the Phlogiston from his modified Dragonfly ship. His vessel was last seen in the flow near Realmspace.
There is reason to believe that the crystal spheres move about in the flow, like corks floating in a tub of water. After consulting with historical maps and other records, I do not believe this to be the case. Instead, I believe that the crystal spheres are stationary, at least in relation to one another, and that the currents of the flow are what change.
For as long as historical records have been kept, there have been currents connecting the three spheres of Realmspace, Greyspace, and Krynspace. At present, transport between Greyspace and Krynnspace is very difficult, but several centuries ago (at about the time of Krynn's Cataclysm) Greyspace and Krynspace shared a strong two-way current. Now, such a current exists between Realmspace and Greyspace.
According to conventional wisdom, Greyspace "moved" to a different location, and the two-way current moved with it. However, if this were the case, the three-way connection between the three spheres would have been lost. If, on the other hand, the flow current moved for some reason, but the spheres remained stationary, the three-way arrangement would have changed, but would still exist.
My research has concluded that the spheres themselves rotate on an internal axis, and that this rotation is very rapid. People inside the sphere are unaware of this, because they are all moving together with the sphere's gravity well. Upon entering the flow and breaking free of a sphere's gravity well, one on the ship may notice their portal moving away at an alarming rate. Simply put, the surface of a crystal sphere is always moving. This is why portal searches are required to enter a sphere.
All of the spheres rotating create turbulence and eddies in the flow, which allow the currents to exist. The current between Greyspace and Krynspace was lost shortly after the Cataclysm. I believe that this sudden change in Krynspace caused the sphere to rotate in a different direction, which destroyed the current. These changes in currents also allowed a new current to develop between Greyspace and Realmspace. To travellers, however, this movement is impossible to track. All they notice are slight changes in landmarks. In the past, these changes were attributed to the movement of the crystal spheres. In truth, it is because the currents of the flow are always changing. As a result, each trip through the flow is unique; the same exact route is never used twice.
I intend to continue my research on this theory, and with the centuries of undead life before me, I expect to gather large amounts of data.
