How long is a year?

October 04, 2010
  • General

It's actually a non-trivial question when you consider all the various motions of the Earth around the Sun. The naive picture of the Earth revolving in a circular path ignores a lot of the rich complexities of the Earth's orbit which have very tangible effects on our home planet. This video explains things quite nicely:

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Who would have thought that the solar system was so complicated!