Wave is matter moving in pattern. All waves must have carrier. There is no sound wave in space, no light wave in space, no gravity wave in space. Due to space is just empty space that contains nothing but space.

Radiation is energy, must coexist with matter/carrier. There is absolutely nothing in vacuum space. No light, no field, no force, no photon, no EM wave, no gravity wave, no black hole, no solar wind, no magnetic field in vacuum space. All dumb scientists lies and mistakes.