This image shows the Sun as viewed by the Soft X-Ray Telescope (SXT) onboard the orbiting Yohkoh satellite. The bright, loop-like structures are hot (millions of degrees) plasma confined by magnetic fields rooted in the solar interior. An image of the sun in visible light would show sunspots at the feet of many of these loops. The halo of gas extending well beyond the sun is called the corona. The darker regions at the North and South poles of the Sun are coronal holes, where the magnetic field lines are open to space and allow particles to escape.
Yohkoh mission of ISAS, Japan. The Yohkoh Soft X-ray telescope was prepared by the Lockheed-Martin Solar and Astrophysics Laboratory, the National Astronomical Observatory of Japan, and the University of Tokyo with the support of NASA and ISAS.
The image was apparently prepared from data from the Yohkoh mission, the image here was released by NASA. The underlying data was released into the public domain by the Yohkoh mission team. See [1].
На веб-сайте NASA размещено большое число изображений Советского/Российского космического агентства и других неамериканских космических агентств. Они вовсе не обязательно находятся в общественном достоянии.
Совместный проект SOHO (ESA & NASA) предполагает, что все материалы, созданные их зондом, защищены авторским правом и требуют разрешения для коммерческого необразовательного использования. [3]
{{Information| |Description = This image shows the Sun as viewed by the Soft X-Ray Telescope (SXT) onboard the orbiting Yohkoh satellite. The bright, loop-like structures are hot (millions of degrees) plasma (electrically charged gas) confined by magnetic