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Space

Submission + - NASA to explore "secret layer" of the Sun (nasa.gov)

SpaceAdmiral writes: "Early next year, NASA will launch the experimental telescope SUMI (Solar Ultraviolet Magnetograph Investigation) to study the transition region of the Sun. The transition region is about 5000km above the stellar surface and is where magnetic fields mysteriously accelerate the solar wind to a million mph. SUMI will use the technique of "Zeeman splitting." Although this technique has been used in the past to study thousands of sunspots, gas in the transition region produces spectral lines in the UV range that can't be seen with an Earth-based telescope."
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NASA to explore "secret layer" of the Sun

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