Astronomy: English Vocabulary List

the outer layer of the Sun's atmosphere, observable as a plasma halo during a solar eclipse

"The sun's corona is very hot."

"The corona is the outermost layer of the Sun's atmosphere"

the apparent path that the Sun traces in the sky over the course of a year, which is also the plane of the Earth's orbit around the Sun

"The ecliptic is the sun's path."

"The ecliptic is the apparent annual path of the Sun on the celestial sphere"