It is therefore possible to avoid the singularity of a rotating black hole. If the black hole is rotating faster than its mass, the two horizons disappear and leave a naked singularity, and we already know about what happens with those. The singularity of a rotating black hole is unique in that it is not a point in space. Based on Kerr geometry, the singularity should be a ring. From an angle, the singularity would look like a circular window, and from the equator it would look more and more oval.
All light has a wavelength and frequency.
When it travels through an expanding space, the wavelength is increased or lengthened, and the frequency is decreased. This is called redshifting because as the light wave lengthens it goes towards the color red. As mentioned, near a black hole the gravitational force is incredibly strong. As light tries to leave a body with a strong gravitational pull, the wavelength is lengthened. Gravitational lending Gravitational lensing is when light is pulled by gravity.