Khan Academy Static

What causes the seasons? Even more, can Earth's climate change over long period just to "wobbles" in its orbit? This tutorial explains it all. You'll know more about orbits (and precession and Milankovitch cycles) than you ever thought possible. Have fun!

10686_Precession_causing_perihelion_to_happen_later.html

10688_Apsidal_precession_perihelion_precession_and_Milankovitch_cycles.html

10684_Are_southern_hemisphere_seasons_more_severe_.html

10683_How_earth_s_tilt_causes_seasons.html

10685_Milankovitch_cycles_precession_and_obliquity.html

10682_Seasons_aren_t_dictated_by_closeness_to_sun.html

10687_What_causes_precession_and_other_orbital_changes.html