The Seasons and the Earth's Orbit - Milankovitch Cycles
http://aa.usno.navy.mil/faq/docs/seasons_orbit.php

Astronomical Applications Department, US Naval Observatory

The Astronomical Applications Department (AAD) of the U.S. Naval Observatory computes, from fundamental astronomical reference data, the position, brightness, and other observable characteristics of celestial bodies, as well as the circumstances of astronomical phenomena. This page describes the Earth's orbit, seasons and their relation to Milankovitch cycles. Users can also follow links to the AAD's publications, data services, software, FAQ and research.

This description of a site outside SERC has not been vetted by SERC staff and may be incomplete or incorrect. If you have information we can use to flesh out or correct this record let us know.

Part of the Starting Point collection. The Starting Point collection includes resources addressing the needs of faculty and graduate students designing, developing, and delivering entry-level undergraduate courses in geoscience.

This resource is referenced here:

• Starting Point-Teaching Entry Level Geoscience:Using an Earth System Approach:Earth System Science in a Nutshell: Earth in Space

Subject: Geoscience:Atmospheric Science, Lunar and Planetary Science
Grade Level: General Public
Theme: Teach the Earth:Course Topics:Planetary Science, Atmospheric Science