Cancer is located to the east of Gemini and to the west of Leo. It is the first constellation in summer and the darkest of the twelve constellations, symbolizing the inner potential and soul of human beings.
The twelve constellations, namely the zodiac, are astrological regions that describe the sun passing through the zodiac on the celestial sphere, including Aries, Taurus, Gemini, Cancer, Leo, Virgo, Libra, Scorpio, Sagittarius, Capricorn, Aquarius and Pisces. Although Ophiuchus also passes through the zodiac, it is not in the zodiac used in astrology.