Learn about our sun & its influence on our solar system!

  • Missions
  • Spectacular!
  • Current Observations
  • Aurora
  • Eclipses
  • Comet ISON
  • UFO?
  • The Transit of Venus
  • 3 Years of SDO

The Sun Today

Northern Lights Bucket List for Alex Maltosz-Cox

Northern Lights Bucket List


AR12192 is the biggest sunspot in 2 solar cycles and the largest since Nov. 1990.

AR12192: Biggest Sunspot of Two Solar Cycles!


The X-flare from AR12192 not yet at its peak in the SDO/AIA 131 extreme ultraviolet wavelength channel. credit: NASA/SDO

Another X-flare from AR12192


An SDO/HMI view of the visible sun showing the largest sunspot of solar cycle 24, AR12192.

AR12192: The Largest Sunspot Group of Solar Cycle 24


Read more on the blog »