The discussion centers on the concept of whether the Universe can be considered to be spinning, particularly in the context of General Relativity (GR). Participants reference Kurt Gödel's model of a spinning universe, which suggests the existence of closed timelike paths, potentially allowing for time travel. The conversation also touches on Mach's Principle, which posits that the Universe cannot spin as a whole without a reference point, and discusses the implications of Gravity Probe B's findings on the geodetic and gravitomagnetic effects predicted by GR and alternative theories. The results from Gravity Probe B, expected in early 2006, may provide critical insights into the rotation of the Universe.
PREREQUISITESAstronomers, physicists, cosmologists, and anyone interested in the implications of General Relativity on the nature of the Universe and its potential rotation.
surajt88 said:No crazy math required. Earth IS the centre of our observable universe.
Drakkith said:To be more accurate, one could say that every observer is always at the center of their own observable universe.