I wrote this post on International Astrology Day 2010, on the day when the Sun enters Aries on 21st March, crossing the equator and moving into the northern hemisphere. This marks the arrival of Spring in this hemisphere and it is also the Vernal Equinox, when day and night are of equal length.
Aries is the first Zodiac sign. The sign of Aries is associated with the ram
Aries is also associated with new plant life shooting up through the earth, hence the symbol for Aries, which is like the ram's horns, and like the new shoots of a plant.
Here are some more Aries images: Aries carved in stone on the portal of the cathedral of St. Denis in Paris
and Aries and the labours of the month, from Les Tres Riches Heures du Duc de Berry. Look at the top and see the Sun in Aries on the right, leaving Pisces behind on the left. Farmers and land workers are preparing the ground, planting seeds.
More on Aries here in this short video on my YouTube channel: