Speaking of Eclipses …


An eclipsing binary star is a binary star with the orbital plane of the two stars angled so it is nearly in the line of sight of the observer. The pair of stars undergo mutual eclipses. Algol (β Persei) is the best-known example of an eclipsing binary. Algol is actually a triple-star system, in which the large and bright primary Algol A is regularly eclipsed by the dimmer Algol B every 2.87 days as seen from Earth.

The animation was created using near-infrared images from the CHARA interferometer. The numbers in the corner represent the relative phase of the orbit. The stars are so close together (about 1/16 of the distance between the Earth and the Sun) that Algol A is slowly stripping matter out of Algol B.

Image Credit: Fabien Baron (CC BY-SA 3.0)

Team Kimberlin Post of the Day


There are show cause hearings and a trial scheduled for today in the Hoge v. Kimberlin, et al. lawsuit beginning at 8:45 this morning in the Circuit Court for Carroll County. My ability to foresee how things will go ends at 8:45 am today. After that, the results depend on the findings made by Judge Hecker.