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Wikenigma - an Encyclopaedia of Unknowns Wikenigma - an Encyclopaedia of the Unknown Science

Flyby anomalies

The flyby anomaly is a discrepancy between current scientific models and the actual increase in speed (i.e. increase in kinetic energy) observed during a planetary flyby (usually of Earth) by a spacecraft. In multiple cases, spacecraft have been observed to gain greater speed than scientists had predicted, but thus far no convincing explanation has been found.
Source Wikipedia

The speed increase is relatively small, at about 3 to 13 mm/s, nevertheless, investigations by the US Jet Propulsion Laboratory, The Goddard Space Center and the University of Texas have not been able to explain the anomalies, which have now been observed and verified several times, with at least 10 different spacecraft. The first observation was in 1990 with NASA's Galileo mission.

Theories about the anomaly include : the presence of Dark Matter, lightspeed variations and gravity variations.


Also see :The Gravitational constantplugin-autotooltip__plain plugin-autotooltip_bigThe Gravitational constant

The gravitational attraction between two objects is dependent on the mass of the objects, the distance between them, and the gravitational constant (G).

The masses and distance can vary, but the constant, as the name implies, is always a fix…


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