On approximately May 18 each year, the constellation Corona Borealis , a.k.a. the Northern Crown, is directly overhead as viewed from Berkeley, California (slightly North of zenith as viewed from my parents' place in Pasadena). I have to admit that I never paid much attention to this fairly inconspicuous constellation until about a year ago. But around the Summer 2006 I noticed that one of the stars in the constellation, designated kappa by the German astronomer Johann Bayer in the early 1600's, did something really interesting. From about 2004 to 2005 the star was steadily accelerating away from the Earth. This is not unusual, stars commonly do this as they are tugged by the gravity of other stars. But in 2005 kappa Coronae Borealis turned around and started heading back toward us. If it performed another of these turns anytime within the next 10 years, it would indicate that the star has a planet orbiting it. I try not to get my hopes up too much when it comes to potenti
Updates on astronomy and parenting in paradise...er, Pasadena. Wait, make that Cambridge, MA.