How to weigh a star using a moon

If a star has a planet, and that planet has a moon, and both of them cross in front of their star, then scientists can measure their sizes and orbits to learn about the star.

Link: http://www.astronomy.com/asy/default.aspx?c=a&id=10329

Time: 18. Oct. 2010

Feed: Astronomy.com - News

Topics: moon, star