A total solar eclipse occurs when the moon comes between the Earth and sun, casting a shadow that blocks out the sun’s light. Earlier this year, parts of Western North America experienced an annular solar eclipse, where the moon was slightly too far from the Earth to entirely cover the sun. When the moon completely obscures the sun’s face, the solar atmosphere, or corona, is visible. The corona is an energetic field of plasma where temperatures exceed 1.8 million degrees Fahrenheit.
ESA’s Proba-2 is a tiny satellite that flies around the Earth 14.5 times per day, watching the sun in ultraviolet wavelengths to understand sunspots and solar flares. During its orbits on Nov. 13, it passed through the moon’s shadow, dipping in and out a total of three times. The effect was always a partial eclipse, where the moon did not completely cover the sun, but beautiful nonetheless.
Videos: 1) ESA 2) NASA/Cirtain
