Scientists find hidden ‘frozen-in’ rules in Einstein’s spacetime that shape cosmic evolution
SMRTR summary
Spacetime may follow hidden rules it cannot break, according to a new study published in *Physical Review Letters*. By rewriting Einstein's gravity equations to resemble plasma physics, researchers found that spacetime can "lock in" geometric structures — like knots in a rope — that survive extreme cosmic distortions. These built-in constraints could make black hole mergers and gravitational waves more predictable, potentially improving models used by observatories like LIGO and LISA.
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