Sun: Solar Activity

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Solar Activity: Human Consequences

Introduction There are many components to the impacts of solar activity on our technology and on human exploration of space. Telegraph and telephone outages were a common problem in the late 1800's...

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NASA's STEREO Spacecraft Reveals the Anatomy of Solar Storms

NASA Goddard Space Flight Center (Apr. 14, 2009) – What if solar physicists could predict sun storms with the same accuracy and efficiency that meteorologists predict hurricanes? FIGURE CAPTION –...

Sunspots: 17th Century

Introduction - Early 1600's Using telescopes similar to Galileo Galileis instrument, Johannes Fabricius and...

Solar Coronal Mass Ejections: First Observations

Introduction Since the 1970s, astronomers have studied brief explosions of matter in the solar corona which...

News Articles

How Low Can It Go? Sun Plunges into the Quietest Solar Minimum in a Century

April 1, 2009: The sunspot cycle is behaving a little like the stock market. Just when you think it has hit bo...

New Sun-Watching Instrument to Monitor Sunlight Fluctuations

NASA Goddard Space Flight Center (March 30, 2009) During the Maunder Minimum, a period of diminished solar...