redshift
- n (astronomy) a shift in the spectra of very distant galaxies toward longer wavelengths (toward the red end of the spectrum); generally interpreted as evidence that the universe is expanding
- Instead, he turned to a spectrogram that he had taken from quasar 3C 48 and using Schmidt's redshift key discovered that 3C 48 was re ceding even faster than 3C 273.
- Timidly at first but more boldly of late, some astronomers have suggested other possible causes for the redshift, viz.
- But the speeds indicated by the amount of redshift, some of which now equal 25,000 miles per second, have made many astronomers doubt.