Beware 2038! Published on March 28, 2023March 27, 2023 by fivecolorssandt@icloud.com Numbers and the sky We describe a year when the rules don’t work. Read More
The original source Published on May 31, 2022May 30, 2022 by fivecolorssandt@icloud.com Old books Sometimes it helps to go back to the original. Read More
Astronomy in church Published on August 18, 2020August 17, 2020 by fivecolorssandt@icloud.com The cathedral as observatory We add some complication to an often oversimplified story. Read More
