Archives for 2017

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…]

After Burning Man 2017

Well, that was quite an adventure! After nine days in the desert running the theme camp “Cupcake Cafe” at Burning Man, I returned to the house exhausted but satisfied. I need to say that having excellent campmates makes it easier to run things. Here’s how everything went. Cupcakes and Frosting The whole point of the [Read More…]