(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.

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.

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 to Earth's gravity can change the way time feels.