Figure 8

Figure 8: The geometry near space-like infinity: The “point” i0 has been blown up to a cylinder that is attached to - I and + I. The physical space-time is the exterior part of this “stovepipe”. The “spheres” ± I and 0 I are shown in blue and light green, respectively. The brown struts symbolize the conformal geodesics used to set up the construction. Note that they intersect I and continue into the unphysical part.