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Sun Set To 'Flip Upside Down' Within Weeks

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Oceander:

--- Quote from: DCPatriot on November 20, 2013, 02:20:03 pm ---Actually, since the earth is tilted as it revolves on its axis, pointing 'up' while standing on the equator would not necessarily be pointing sideways.

...but your point is well taken.   :laugh:

--- End quote ---

But again, it all depends on what the term "sideways" means.  If you're on the equator, then you're at a point where you're perpendicular to the axis of rotation, and so can be said to be pointing sideways when you point in a direction that is perpendicular to the axis of rotation - which would be pointing straight up at the equator.

Since the Earth's tilt has to do with its orbit around the Sun and not with its own rotation, "sideways" would appear to mean something like "in the direction of the neighboring member of the Solar System."  Since the Earth's axis is tilted, you would not be pointing "sideways" in this sense if you pointed up from the equator because you would not be pointing at a neighboring member of the Solar System.

It's all about context.

EC:
Don't go dragging frames of reference into it and confusing everyone!  :smokin:

GourmetDan:

--- Quote from: Oceander on November 21, 2013, 05:30:18 am ---Since the Earth's tilt has to do with its orbit around the Sun and not with its own rotation, "sideways" would appear to mean something like "in the direction of the neighboring member of the Solar System."  Since the Earth's axis is tilted, you would not be pointing "sideways" in this sense if you pointed up from the equator because you would not be pointing at a neighboring member of the Solar System.

It's all about context.

--- End quote ---

Actually... since equivalent coordinate-systems are physically indistinguishable under GR, it's all about belief...

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