I found this whilest trolling the internet today... On this day in history....
* 1618 – German astronomer and mathematician Johannes Kepler discovered the third law of planetary motion. 73...bruce _______________________________________________ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb