Shedding light on special relativity: Why photons don’t get old

If you have attended a night sky outreach event, conducted, for example, by the Black Canyon Astronomical Society or the Western Colorado Astronomy Club, then you have heard mention of the distance to a star or galaxy measured in light years, i.e. how long the light has been travelling to reach Earth. You might wonder “Do the photons get tired or slow down as time passes?”

You can listen to Shedding light on special relativity: Why photons don’t get old online on Radio and Podcast. Open the player on this page to stream the available audio.

Shedding light on special relativity: Why photons don’t get old is an episode from Western Slope Skies by KVNF Public Radio.

This episode is 4:15 long.

This episode was published on May 8, 2026.

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