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The vortex view of planetary motion around the Sun

posted by Jason Kottke   Mar 01, 2013

Since the Sun moves relative to the other stars around it at about 45,000 miles/hr, if you change the frame of reference from the Sun to the surrounding stellar system, you get planetary motion that looks something like this:

I would take this video with a grain of salt though, especially when it says things like “the Sun is like a comet, dragging the planets in its wake”…the planets don’t lag behind the Sun. Better to think of the thing as a conceptual schematic: resembling reality but not really accurate. (via @pieratt)

Update: There’s a new version of the video that addresses some of the concerns raised about the first video:

(thx, john)

Update: Phil Plait from Bad Astronomy has posted a pretty thorough takedown of this video.

However, there’s a problem with it: It’s wrong. And not just superficially; it’s deeply wrong, based on a very wrong premise. While there are some useful visualizations in it, I caution people to take it with a galaxy-sized grain of salt.

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