Learn about the vernal equinox by completing this web hunt.

This site, created by an amateur who has studied astronomy for thirty years, provides a scholarly explanation of the vernal equinox. Links to definitions of significant terms.

Find out what the seasons are and how they change. Through the use of excellent graphics, content explores the Earth's orbit around the sun and how sunlight reaches the earth at equinox and the winter solstice.

After listening to excerpts from four of the violin concertos from "The Four Seasons" by Italian composer and violinist, Antonio Vivaldi, decide which excerpt was meant to go with which season, and also decide where the earth would be in...