A new analysis suggests that when five different spacecraft flew past Earth several years ago, they gained more speed than can be accounted for by Einstein's theory of gravitation.
The unexplained gain in speed is tiny, between 1.8 and 13.5 millimeters per second—only about one-millionth the total velocity of the spacecraft examined.
Tuesday 18 March 2008
Gravity
Strange, interesting (or maybe not) news on the gravity front from sciencenews;
