noun
- Plural of geocorona; a faint halo of hydrogen atoms surrounding Earth's upper atmosphere, extending thousands of kilometers into space.
Usage: technical; astronomy; plural form
Examples
- Scientists detected geocoronae around Earth using ultraviolet observations from space.
- The geocoronae extend far beyond the traditional boundary of the atmosphere.
- Multiple geocoronae have been identified around different planets in our solar system.
- Studying geocoronae helps us understand planetary atmospheres and solar wind interactions.