Wikipedia contributors. (2023, November 1). Leonhard Euler. In Wikipedia, The Free Encyclopedia. Retrieved November 8, 2023, from https://en.wikipedia.org/w/index.php?title=Leonhard_Euler&oldid=1183030259
https://github.com/davepinch/pinchy.cc/blob/master/content/topics/people/p/pierre-simon-laplace/read-euler-read-euler-he-is-the-master-of-us-all.md
This cluster has an estimated age of 13.70 billion years and is following a retrograde orbit through the Milky Way.