In planetary terms, a corona is an oval-shaped feature upon a planet's surface.
"Corona" means "crown" in Ancient Greek.
A corona is found on the surface of planet Venus.
Additionally:
Uranus has one because it is a gas planet
Pieces of rock that strike the surface of a moon or planet are called meteorites.
The circle of light around the sun is called a Corona. The corona can usually only be seen during a total solar eclipse. When this happens it can be seen as an irregularly shaped glow surrounding the moon.
Jupiter
Jupiter is a giant ball of gas and liquid with little, if any, solid surface. Instead, the planet's surface is composed of dense red, brown, yellow, and white clouds. The clouds are arranged in light-colored areas called zones and darker regions called belts that circle the planet parallel to the equator.
A bowl-shaped feature on the surface of a planet or moon is usually called an impact crater. These are formed when a meteorite or asteroid hits the surface, creating a depression with raised edges. Impact craters can come in various sizes and are found on many celestial bodies in the solar system.
Its called the crust.
The force of gravity at the surface of the eight planets is called surface gravity. It is the gravitational pull experienced by objects on the surface of a planet due to its mass.
Geologic features are any physical features on the surface of a planet or moon, or of the rocks exposed at the surface, by any geologic process.
The most dominant physical feature of planet Earth is its water, which covers about 71% of the planet's surface. The oceans play a crucial role in regulating the Earth's climate and supporting various forms of life.
When magma erupts onto the planet's surface, it is called lava.
That would have the planet at a distance of 300,000 km from the surface. This would be in the corona region. No matter can exist in this area. At millions of degrees in temperature, everything is plasma in this area.