Jordens rotationsaske er slingrende, hvilket betyder, at nordpolen ikke altid peger i samme retning til himlen – den følger en cirkulær bane med en periode på ca. 26.000 år.
Sammen med placeringen af Jorden på sin bane, påvirker den graden af årstiderne.
Image source: NASA
This project (EDU-ARCTIC) has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 710240. The content of the website is the sole responsibility of the Consortium and it does not represent the opinion of the European Commission, and the Commission is not responsible for any use that might be made of information contained.
