About the Aries zodiac sign
Aries — the Ram — is the first sign of the zodiac and the cardinal fire sign. Ruled by Mars, Aries energy is direct, competitive, and built for first moves. Famous Aries celebrities include Lady Gaga, Mariah Carey, Robert Downey Jr., Russell Crowe, and Vincent van Gogh. The Aries signature in a birth chart is a fast-talking, fast-deciding presence that hates queues, committees, and any process slower than "now."
How Aries sun signs are determined
On AstroTypeDB, an Aries Sun sign means someone was born when the Sun was in Aries (March 21 - April 19). The full astrological picture also depends on Moon sign, Rising sign, and where Mars (Aries' ruler) sits in the chart — many famous Aries figures lean hard on their Mars placement.