OTOH, there's a gravity to photon conversion which should likely affect mass conditions in black holes. And also, again, Fedi's SQR Superfluid Quantum Relativi

OTOH, there's a gravity to photon conversion which should likely affect mass conditions in black holes. And also, again, Fedi's SQR Superfluid Quantum Relativity (.it), FWIU: also rejects a hard singularity boundary, describes curl and vorticity in fluids (with Gross-Pitaevskii,), and rejects antimatter.