A large zodiacal constellation between Libra and Sagittarius; Also called: Scorpio.
Zodiacal constellation in the southern hemisphere between Libra and Sagittarius, represented as a scorpion. The Sun passes briefly through Scorpius in the last week of Nov. The heart of the scorpion is marked by the red supergiant star Antares. Scorpius contains rich Milky Way star fields, plus the strongest X-ray source in the sky, Scorpius X-1. In astrology, the dates for Scorpius are between about 24 Oct and 21 Nov (see precession).