NASAさんのインスタグラム写真 - (NASAInstagram)「Swipe to see the Sun’s outer atmosphere in unprecedented detail 🔎 Scientists used a rocket-borne telescope to capture the highest-resolution views of the Sun’s outer atmosphere, or corona. The images show loops as thin as 125 miles across in areas that appear dim and fuzzy in other Sun-watching telescopes. These images provide visual evidence that the staggeringly hot material that fills the Sun’s corona — which is some 300 times hotter than its surface — has definite structure on fine scales, rather than being a homogenous soup of particles. The images were captured by @nasa’s High-Resolution Coronal Imager, or Hi-C mission, on May 29, 2018. Hi-C is a solar telescope mounted on a sounding rocket, a sub-orbital rocket that makes brief flights into space before falling back to Earth. The Hi-C mission is led by principal investigator Amy Winebarger of @nasa_marshall, and NASA’s sounding rocket program is led out of our sister facility, @nasawallops. More at nasa.gov/soundingrockets #nasa #space #rockets #science #sun」4月24日 1時54分