Meridian Distance
DefinitionMeridian Distance is the angular distance between a celestial body’s hour circle and the local celestial meridian. It is measured along the...
Meridian
DefinitionThe meridian is the celestial great circle that passes through the north and south celestial poles, the observer’s zenith, and the nadir...
Algol, in the constellation Persus
DefinitionAlgol is a prominent eclipsing binary star in the constellation Perseus, traditionally identified with the severed head of Medusa. Also known as...
Medusa’s Head
DefinitionMedusa’s Head is a traditional name for Algol, the fixed star Beta Persei in the constellation Perseus. In mythic star imagery, Algol...
Mediumship
DefinitionMediumship is the claimed practice of receiving impressions or messages from spirits, deceased people, or nonphysical sources. It may involve mental impressions,...
Medium Coeli
DefinitionMedium Coeli, usually abbreviated MC and commonly called the Midheaven, is the point where the ecliptic intersects the local meridian above the...
