Gaps in knowledge Published on November 19, 2024November 15, 2024 by fivecolorssandt@icloud.com High and low We note some gaps in our expertise. Read More
But first- Published on November 12, 2024November 10, 2024 by fivecolorssandt@icloud.com The two-step problem We identify a major block to productivity. Read More
Getting the stars right Published on August 13, 2024August 12, 2024 by fivecolorssandt@icloud.com Does it matter? We wonder how careful a fiction author really needs to be. Read More
Octopus arithmetic Published on August 6, 2024August 5, 2024 by fivecolorssandt@icloud.com How different could it get? We ponder how to communicate with aliens. Read More
Too simple, or not simple enough Published on July 16, 2024July 12, 2024 by fivecolorssandt@icloud.com Modeling stars How do you know when you’ve included all the important things? Read More
What it looks like Published on June 25, 2024June 23, 2024 by fivecolorssandt@icloud.com The craters of the Moon It looks like something familiar. . . Read More
Misnaming things Published on May 14, 2024May 14, 2024 by fivecolorssandt@icloud.com The astronomer’s dictionary Misleading terms make learning Astronomy harder. Read More
Old projects Published on April 16, 2024April 15, 2024 by fivecolorssandt@icloud.com A plea for documentation We pull out something from the archives. Read More
The answers Published on April 2, 2024March 31, 2024 by fivecolorssandt@icloud.com and explanations We present the answers to last week’s conundrums. Read More
time and tide Published on March 19, 2024March 17, 2024 by fivecolorssandt@icloud.com Teaching complexity Almost every subject is complicated if you go deeply enough into it. Where do you stop teaching? Read More