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February 22, 2007
An X9-class solar flare on Dec. 5, 2006, recorded by the GOES-13 Solar X-ray Imager.
No Safe Place

The ESA-NASA Ulysses spacecraft has discovered that there is no place in the inner solar system completely safe from solar radiation storms.


Image Credit: NOAA

February 20, 2007
Ulysses over the sun's South Pole, an artist's concept
A Cool Solar Mystery

One pole of the sun is cooler than the other. That's the surprising conclusion announced today by scientists who have been analyzing data from the ESA-NASA Ulysses spacecraft.


Image Credit: ESA

February 7, 2007
artist concept of Ulysses at sun's south pole
South Pole Flyby
(NASA Feature)

Less than one hundred years ago, the south pole of Earth was a land of utter mystery. Explorers labored mightily to get there, fighting scurvy, wind, disorientation and a fantastic almost-martian cold. Until Roald Amundsen and Robert F. Scott reached the Pole in 1911 and 1912, it was terra incognita.

The situation is much the same today—on the sun.


See Also: NASA-European Spacecraft Swoops Under Sun's Pole (NASA News: Exploring the Universe)

Image Credit: NASA/JPL.

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