Corona (planetary geology)
Oval feature on Venus or Miranda / From Wikipedia, the free encyclopedia
For other uses, see Corona (disambiguation).
In planetary geology, a corona /kəˈroʊnə/ (plural: coronae /kəˈroʊniː/) is an oval-shaped feature. Coronae appear on both the planet Venus and Uranus's moon Miranda and may be formed by upwellings of warm material below the surface.