صورة:Sun in X-Ray.png

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 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.

NASA Goddard Laboratory for Atmospheres

• http://rsd.gsfc.nasa.gov/rsd/images/yohkoh.html
• http://rsd.gsfc.nasa.gov/rsd/images/yohkoh_l.gif

-

NASA Goddard Laboratory for Atmospheres

Copyright information from http://rsd.gsfc.nasa.gov/rsd/About.html - Images produced by NASA are usually free of copyright [...]

 |  |  |  |  |  |  |  |  | +/-

• Use of NASA logos, insignia and emblems are restricted per US law 14 CFR 1221.
• The NASA website hosts a large number of images from the Soviet/Russian space agency, and other non-American space agencies. These are not necessarily in the public domain.
• Materials from the Hubble Space Telescope may be copyrighted if they do not explicitly come from the STScI. [1]
• All materials created by the SOHO probe are copyrighted and require permission for commercial non-educational use. [2]
• Images featured on the Astronomy Picture of the Day (APOD) web site may be copyrighted. [3]