"sphere" - key terms from Wikipedia

armillary sphere
bloch sphere
blue sphere
borg sphere
bounding sphere
bourgeois public sphere
celestial sphere
circumscribing sphere
coordination sphere
cultural sphere
dielectric sphere
dyson sphere
eternal sphere
first sphere
geodesic sphere
ice sphere
inner sphere
inside the sphere
landing sphere
lie sphere	geometry
odin sphere
payload sphere
perfect sphere
photon sphere
pressure sphere
public sphere
ray sphere
riemann sphere
second sphere
silicon sphere
sphere
sphere	and cylinder
sphere	and the cylinder
sphere	break
sphere	builders
sphere	component
sphere	grid
sphere	intersecting a circle
sphere	of influence
sphere	of mass
sphere	of plutonium
sphere	of yun
sphere	onto
sphere	represents
sphere	surfaces
third sphere
two sphere	surfaces intersecting
unit sphere
volume of a sphere
w on our sphere