Hubble’s Constant Changes Over Time

[jedishrfu]

This Forbes article written by Ethan Siegel talks about the expanding universe and the Hubble constant that isn’t so constant.

Surprise! The Hubble Constant Changes Over Time https://www.forbes.com/sites/starts...rprise-the-hubble-constant-changes-over-time/

 

[Orodruin]

Well, yes. The Hubble constant is given by $H = \dot a/a$ where $a$ is the scale factor. It is constant only for a universe dominated by a cosmological constant.

 

[jedishrfu]

I posted the article because of the cool graphic of the nearby universe and the over/under dense concentrations of matter variations.