Originally posted by lucifershammerI can see no possible good coming from defining the Earth as the centre of the universe. Remember the biggest gravity well in the area is the Sun and in relation to the Earth it is moving. Suddenly you need all kinds of complex adjustment equations to allow for this.
There is no unique (or preferred) centre of the universe (that's what your site says in the first line) in relativity - any point can be chosen as centre for a particular frame of reference. So, as I said earlier, it is not wrong to call the earth the centre of the Universe.
EDIT: Leave the science to the scientists. Stick to the law.
Originally posted by XanthosNZThere is a very simple reason why defining the Earth as the centre would be preferred - because this is where we are. If the Earth were not chosen as the centre, we would have to adjust for a moving observer every time we try to process astronomical data.
I can see no possible good coming from defining the Earth as the centre of the universe. Remember the biggest gravity well in the area is the Sun and in relation to the Earth it is moving. Suddenly you need all kinds of complex adjustment equations to allow for this.
Originally posted by lucifershammerIt isn't really defining the Earth as the centre of the universe though, it is just defining the Earth as the frame of reference for the processing of astronomical data.
There is a very simple reason why defining the Earth as the centre would be preferred - because this is where we are. If the Earth were not chosen as the centre, we would have to adjust for a moving observer every time we try to process astronomical data.
When I am walking inside a train that is moving. In working out how fast I am walking in the train, I don't define the train as being the centre of the universe.
Originally posted by lauseyFrom your frame of reference, in your coordinate system, the train is the centre of the Universe.
It isn't really defining the Earth as the centre of the universe though, it is just defining the Earth as the frame of reference for the processing of astronomical data.
When I am walking inside a train that is moving. In working out how fast I am walking in the train, I don't define the train as being the centre of the universe.
Originally posted by Bosse de NageHe was crazy enough to jump up and declare the Sun the centre of Universe (note that!) without providing evidence - but I doubt he was crazy enough to do what you suggest.
How do you think Galileo would have fared if he'd stood up and declared himself the centre of the Universe?