New Site Using WordPress

It’s time to move away from hand-edited HTML to a real content-management system. The old site’s content will appear gradually, starting some time in the future. But for now, this is a fresh start. This site uses the StudioPress Genesis Framework with the Associate child theme. Most of the front page’s widget areas are unused. Widgets [Read More…]

The TRAPPIST-1 Chord

In February, 2017, astronomers announced that the nearby star TRAPPIST-1 has seven Earth-like planets. The orbital periods of the six innermost planets have nearly integer ratios. When periods are related by integer ratios, then the corresponding frequencies are related by integer ratios, too. The orbital frequencies of the six innermost Earth-like planets of TRAPPIST-1 have nearly integer ratios of 3:4:6:9:15:24. [Read More…]