Complex sentence: Today, Tifft's redshift quantization, as well as other intrinsic redshift theories, are rarely cited and the most widely used method of determining periodicity, the correlation function, does not detect them.
Split into simpler sentences: Today, Tifft's redshift quantization, as well as other intrinsic redshift theories, are rarely cited. The most widely used method of determining periodicity, the correlation function, does not detect them.