3 ms·

this is something i need a video to understand properly

• kqr2 18y ago
  Not a video, but a helpful image: http://upload.wikimedia.org/wikipedia/commons/1/1d/Moon_trajectory1.svg http://upload.wikimedia.org/wikipedia/commons/1/1d/Moon_traj...
  • mapleoin 18y ago
    mm... nope. that didn't help
    • Chocobean 18y ago
      between the quote below from the article and the excellent picture above, you should be able to see it....Try again, cuz it's really interesting. "Imagine you're driving on a circular race track. You overtake a car on the right, and immediately slow down and go into the left lane. When the other car passes you, you speed up and overtake on the right again. You will then be making circles around the other car, but when seen from above, both of you are driving forward all the time and your path will be convex."
      • nebula 18y ago
        When I first saw the article on reddit, I tried to see if I could figure it out myself, by trying to imagine motion of moon and Earth. But I couldn't. Then I went to the article and was skimming through it. Just gave up when I hit this imagine "race track" thing. Was too lazy at that point in time. However the wikipedia picture did it in seconds. I didn't even have to read the above quote :) Just proves that "a picture is worth a thousand words"
  • dexter 18y ago
    That works actually, thanks