Solar Seasonal Comparison

Credit: SOHO/ESA/NASA · Download full size image

A comparison of three EIT images almost three years apart illustrates how the level of solar activity has increased significantly. The Sun attains its expected sunspot maximum of its 11-years solar cycle in the year 2000. These images are captured using Fe XII 195 Å emissions showing the solar corona at a temperature of about 1 million K. Many more sunspots, solar flares, and coronal mass ejections occur during the solar maximum. The progression towards more active regions and the number/size of magnetic loops is unmistakable. Posted on: 31 Mar, 2003

• Hubble Space Telescope
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• ROSAT X-ray Observatory
• SOHO Solar Observatory
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• 2MASS Sky Survey
• ASTER Earth Imaging Instrument
• MISR Earth Imaging Instrument
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• Galaxy Evolution Explorer (GALEX)
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• Wide-Field Imager (WFI)
• SOFI Infrared Multi-mode Instrument
• Canada-France-Hawaii Telescope (CFHT)
• New Technology Telescope (NTT)
• Atacama Pathfinder Experiment (APEX)
• SOHO Daily Images - 1996
• Spitzer Space Telescope (SIRTF)
• Infrared Legacy Gallery

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