Blog 2000-2021

Arecibo Dies

https://www.nature.com/articles/d41586-020-03421-y?utm_source=Nature+Briefing&utm_campaign=597ee8dba8-briefing-dy-20201203&utm_medium=email&utm_term=0_c9dfd39373-597ee8dba8-45584126     Arecibo Observatory in Puerto Rico was the world’s largest single-aperture telescope from 1963 until 2016 when China built a bigger one. Sound …

The App Girih

The App Girih   This isn’t the feature I’d planned but I have yet again (again again again…) had my Apple password go incognito. Twenty-some …