Objects cannot move away from you faster than the speed of light according to our current understanding of physics. The theory of relativity, proposed by Albert Einstein, states that the speed of light in a vacuum is the ultimate speed limit in the universe. According to this theory, as an object approaches the speed of light, its mass increases, and it requires an infinite amount of energy to accelerate it to the speed of light.
However, the concept you mentioned is related to a phenomenon called "redshift" that occurs when objects in space are moving away from an observer. Redshift is a result of the Doppler effect, which is the change in frequency or wavelength of a wave due to relative motion between the source of the wave and the observer.
When an object is moving away from you, the wavelengths of light it emits become stretched or "redshifted" due to the Doppler effect. This means that the wavelengths become longer, shifting towards the red end of the electromagnetic spectrum. This effect is observed in astronomy when studying the light from distant galaxies. The more distant a galaxy is, the faster it appears to be moving away from us, and the more pronounced the redshift.
It's important to note that this redshift is not a result of the object actually moving faster than the speed of light, but rather the expansion of the universe itself. The phenomenon of objects appearing to move away from us at speeds greater than the speed of light is a consequence of the metric expansion of space, which is a fundamental property of the universe on very large scales.
In summary, objects don't actually move away from you faster than the speed of light, but their light can be redshifted due to their motion away from the observer, as described by the Doppler effect.