�y��vlog

High-energy muons traveling at near–light-speed endure longer, for milliseconds, because of the time dilation predicted by Einstein’s theory of relativity.

Since the wave experiences a time that is different from the laboratory time, the researchers found that accelerating waves also experience time dilation and length contraction.

Consequently, time becomes stretched in a phenomenon known as time dilation: a clock running 10 billion years ago would tick at a normal rate to an observer from that time, but from the perspective of someone today, it would appear to be ticking much slower.

In fact, prior studies have failed to find a time dilation effect between quasars very distant from us and ones relatively close by.

This approach minimized the chance of making “apples-to-oranges” comparisons between distinctly different quasar types and allowed the researchers to calibrate each quasar’s “ticks,” yielding more certainty that some of the observed discrepancies in light fluctuations were caused by time dilation.