[amsat-bb] fascinating - gravity math inaccurate, as shown by spacecraft

[Nate Duehr]

http://www.economist.com/science/displaystory.cfm?story_id=10804075

So-called "slingshot" maneuvers produce a tiny amount more speed than  
current known gravity models allow for... 4mm/sec... and the deep  
space and other probes that have used the maneuver have all seen the  
effect.

Unexplained little gravity phenomenon.  Very interesting.

--
Nate Duehr, WY0X
nate at natetech.com