I did this in Bryce 3D - The Terrain Editors in Bryce 2 and 4 are almost identical to this, for all that matters.

Things To Do With Fractals In Bryce
Chapter 2: Fun With Lattices And The Multireplicate Dialogue (Part 2)

Are we ready to have some fun?
Let us select the Lattice and go to Top View. Open the Object Attributes dialogue and check "Show Origin Handle. Click ok and you should see a tiny green square, representing the origin of the Lattice object. The origin is the point around which an object rotates. By default, it is hidden and fixed at the geometrical centre of the object. Showing it allows you to move it while you are in wireframe view, without moving the object. I moved it to the position shown in the illustration below - the little green dot near the top edge.





Next, let us create a circular arrangement of 9 identical lattices. We use the Multireplicate Dialogue under the Edit menu to make 8 replica of the original, each of them rotated 40 degrees around the x-axis through the (re-set) origin point. Simple mathematics: 1+8 = 9 (lattices) and 9x40 (degrees) = 360 (degrees in a full circle). The Multireplicate dialogue should be set up like this:





The wireframe, seen in Right View, should look like this:





You can move the camera around for some lovely/bizarre renders...





...but we are not quite finished yet.
Select the whole group. If you have rotated it, unrotate it (in the popup menu under the Rotate tool in the Edit palette). In the Multireplicate dialogue, place an order for two copies of the group, each rotated 120 around the z-axis. Click ok, select all groups, group them, re-size and scale to suit you, add your favourite atmospherics, render and you are done. You may like to export the Whole Thing as an object: open the popup on the Create palette, add it to the User category, and the rest needs no tutorial....

Now, don't go on making Dragon Stars forever. It gets boring. Use your own Fractals... or any kind of colour images against black... experiment with the Multireplicate dialogue... have fun!!!