Related topics: nasa · noaa · space weather

1967 solar storm nearly took US to brink of war

A solar storm that jammed radar and radio communications at the height of the Cold War could have led to a disastrous military conflict if not for the U.S. Air Force's budding efforts to monitor the sun's activity, a new ...

Video: SDO spies an elongated coronal hole

A long coronal hole can be seen right down the middle of the sun in this video captured by NASA's Solar Dynamics Observatory on March 23-25, 2016. Coronal holes are areas on the sun where the solar magnetic field extends ...

Study finds surprising variability in shape of Van Allen Belts

The shape of the two electron swarms 600 miles to more than 25,000 miles from the Earth's surface, known as the Van Allen Belts, could be quite different than has been believed for decades, according to a new study of data ...

Van Allen probes revolutionize view of radiation belts

About 600 miles from Earth's surface is the first of two donut-shaped electron swarms, known as the Van Allen Belts, or the radiation belts. Understanding the shape and size of the belts, which can shrink and swell in response ...

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