During a solar eclipse, astronomers who study heliophysics are able to study the sun's corona—its outer atmosphere—in ways they are unable to do at any other time.

This solar eclipse was created by 2 satellites flying in formation, allowing astronomers to photograph the Sun’s corona.

Proba-3 creates artificial solar eclipse to study Sun's corona. Two ESA satellites fly in precise formation to reveal the sun's atmosphere.

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(THE CONVERSATION) During a solar eclipse, astronomers who study heliophysics are able to study the Sun’s corona – its outer atmosphere – in ways they are unable to do at any other time.

2 spacecraft flew exactly in line to imitate a solar eclipse, capture a stunning image and test new tech Christopher Palma - Teaching Professor of Astronomy & Astrophysics, Penn State 10 mins ago ...