Opposition (astronomy and astrology)
two celestial bodies are said to be in opposition when they are on opposite sides of the sky, viewed from a given place (usually Earth)
(Redirected from Opposition (astronomy))
In particular, two planets are in opposition to each other when their ecliptic longitudes differ by 180°. When talking about a single object being in opposition, it is assumed to be opposite from the sun.
The symbol of opposition is ☍.