12th Sphere
The 12th Sphere was a Delphic Expanse sphere encountered in 2153 by .

This sphere was 6.3 light years from  in the Delphic Expanse. D'Jamat's ship had been on a pilgrimage there for several months when discovered by Enterprise. As far as Enterprise could establish, it was completely identical even in the smallest details to Sphere 1 and Sphere 2. ()

Delphic Expanse
Structures