Aries is the first sign of the zodiac, represented by the ram and associated with people born between March 21 and April 19. In astrology, Aries is known for traits like energy, courage, and leadership. Someone might say “I'm an Aries” to indicate when they were born and, if they follow astrology, to suggest something about their personality.

Aries is also one of the 88 official constellations, a group of stars that ancient peoples imagined looked like a ram. The constellation isn't particularly bright or easy to spot, but it sits in an important part of the sky. Thousands of years ago, the Sun appeared to enter Aries at the spring equinox, marking the astronomical start of spring in the Northern Hemisphere. This is why Aries became the first sign of the zodiac: it represented the beginning of the year in some ancient calendars.

In Greek mythology, Aries represents the golden ram that rescued two children, Phrixus and Helle. The ram's golden fleece later became the treasure that Jason and the Argonauts sought in their famous adventure.

Whether you're reading your horoscope, learning constellations, or studying ancient myths, Aries connects to ideas of beginnings, boldness, and the arrival of spring.