article_snippet.sent: It's goal is to understand how exactly the sun interacts with the environment around Earth.
article_snippet.sent: By watching the sun in different wavelengths - and therefore different temperatures - scientists can watch how material courses through the corona, which holds clues to what causes eruptions on the sun, what heats the sun's atmosphere up to 1,000 times hotter than its surface, and why the sun's magnetic fields are constantly on the move.
article_snippet.sent: SDO also measures fluctuations in the sun's extreme ultraviolet output, which provides the majority of energy for heating Earth's upper atmosphere.
article_snippet.sent: By watching the sun in different wavelengths - and therefore different temperatures - scientists can watch how material courses through the corona, which holds clues to what causes eruptions on the sun, what heats the sun's atmosphere up to 1,000 times hotter than its surface .