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> there's no particular physical reality to the matter" Completely wrong. The physical reality is reflected by calculating Newton‘s formulas, which give the ce
by acqq 7y ago
> there's no particular physical reality to the matter"
Completely wrong. The physical reality is reflected by calculating Newton‘s formulas, which give the center of mass somewhere inside or very close to the Sun, as the article explains.
- misnome 7y agoBy that argument we actually orbit the centre of the galaxy, with the sun causing a minor wobble on top of that orbit. It depends on your frame of reference.
- NikkiA 7y agolooks towards the great attractor and sighs
- DiogenesKynikos 7y agoSome frames of reference are very close to being inertial frames, and others aren't. There's a big difference between inertial and non-inertial frames. In non-inertial frames, you have to introduce fictitious forces in order for the physics to work out. In short, the universe cares about acceleration, but not constant motion. Accelerating frames are different from non-accelerating frames.
- brighter2morrow 7y agoWe are accelerating away from the center of the universe though.
- DiogenesKynikos 7y agoThere is no center of the Universe. If the Universe is flat or negatively curved, then it is infinitely large, and if it is positively curved, then the volume is finite, but space is periodic. Space is intrinsically expanding, and that expansion is accelerating. That's quite different from acceleration in Newtonian physics. The statements I made about acceleration are in the context of Newtonian, pre-Relativistic physics, and are only approximate in a Relativistic framework.