(via Minute Physics) This video is chapter 2 in my series on special relativity, and it covers spacetime diagrams, rotational and translational symmetry of both time and space, how certain ...

A simplified explanation of the different parts of DESI’s Hubble diagram.

A snippet of Bach goes a long way toward explaining space and time from a Euclidean perspective.

River Song’s laser has an advantage over Captain Jack’s gun when it comes to Daleks and space-time diagrams. Photo by Tippet and Tsang, from the paper ...

What is space-time? Depending on how fast you're moving or how close you are do Earth's gravity can change the way time feels.

What is space-time? Depending on how fast you're moving or how close you are to Earth's gravity can change the way time feels.