تسجيل الدخول

تسجيل

redshift

المؤلف:  Simon Singh

المصدر:  Big Bang

الجزء والصفحة:  p-431

2026-10-29

54

redshift An increase in the wavelength of emitted light caused by the emitter’s recessional velocity and the resulting Doppler effect. In cosmology this term is usually associated with the stretching of light waves from a distant galaxy as the universe expands. The galaxy is not receding through space, but the expansion of space itself is causing the redshift.