a brief burst of energy from the sun’s photosphere

• corona
• solar flare
• solar wind
• photosphere

a dark spot on the photosphere of the sun

• corona
• solar flare
• sunspot
• magnitude

the sun’s atmosphere

• corona
• universe
• photosphere
• solar flare

the visible surface of the sun

• galaxy
• universe
• corona
• photosphere

the distance light travels in one Earth year; about 9.5 trillion km

• galaxy
• universe
• light-year
• corona

a group of stars, gas, and dust

• galaxy
• universe
• light-year
• corona

everything that exists- planets, stars, dust, gases, and energy

• galaxy
• universe
• photophere
• corona

a band of stars that includes most stars of average color, size, magnitude, and temperature

• main sequence
• galaxy
• magnitude
• corona

brightness of stars

• galaxy
• magnitude
• photosphere
• corona

fast-moving stream of particles thrown into space by solar flares

• magnitude
• corona
• solar flare
• solar wind