This artful illustration of Einstein, some of his equations, and a rendering of a surreal clock helps us conceptualize the differing passage of time experienced by people in different locations and moving at different rates. Although time dilation had been measured for subatomic particles previously, it wasn’t until ~50 years ago that it was measured for an actual clock. (Credit: pasja1000/pixabay)

Einstein was right. Flying clocks around the world in opposite directions proved it.




The Universe is out there, waiting for you to discover it.

Recommended from Medium

Don’t be a fool — have DNA, RNA and Protein Analys in a Single Tool

Mysterious Space Signal Could be Just Noise

Even Viruses Can Get Infected With Other Viruses

Even Viruses Can Get Infected With Other Viruses

Genealogical genetic tests, a threat to biomedical research?

Is Stress the Fountain of Youth?

New Hunting Gear of 2020

Crystals and Shroom Technology

‘Losing The Nobel Prize’ Makes A Good Point, But Misses A Great One

Get the Medium app

A button that says 'Download on the App Store', and if clicked it will lead you to the iOS App store
A button that says 'Get it on, Google Play', and if clicked it will lead you to the Google Play store
Ethan Siegel

Ethan Siegel

The Universe is: Expanding, cooling, and dark. It starts with a bang! #Cosmology Science writer, astrophysicist, science communicator & NASA columnist.

More from Medium

The Highly Misunderstood Segway Disaster

How I Ended Decades of Chronic Pain

The End of Boris Johnson Is The End of Brexit

Did the Milky Way lose its black hole?