How the Solar System Actually Moves

August 27, 2015 at 7:29 pm | Posted in Science, Space | 6 Comments
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You may have seen those animations of the planets circling the sun. Maybe even one of those mechanical devices illustrating it. However, this leaves us with the erroneous impression that the sun is standing still.

As I noted on Quite Enough, “the sun is moving at about 810,000 kph. The earth is not orbiting, it’s spiralling through space, following the sun. We’re not only matching the suns speed to keep up, but spinning and going around as well. So we’re going even faster…”  We also never return to the same point in space in our annual orbit.

I saw a decent animation of the process but it had the plane of the ecliptic (planetary orbits) perpendicular to the sun’s movement, which is incorrect. This one is more accurate. However, it’s also worth noting that the sun is not moving in a straight line either. We’re moving relative to other area stars, and orbiting the galaxy which is moving with our galactic cluster, and so forth.

https://i.imgur.com/rLr8Swh.mp4
David

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