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Warnings: The True Story of How Science Tamed the Weather by Mike Smith tells the story of our storm warning system. See our online store book collection.
This image shows the dramatic difference between solar minimum and solar maximum. The picture on the left was taken in January 1996, near solar minimum. The picture on the right was taken in 1999 when the Sun was nearing solar maximum. The Sun certainly looks more active! These images were taken by the SOHO spacecraft.
Click on image for full size
Courtesy of NASA/ESA

Ulysses Heads South for Solar Maximum
News story originally written on January 4, 2001

Some birds and some people head south for the winter. Well, the Ulysses space probe has headed to the south pole of the Sun! Bet, it's warmer there!

In order to study the top and bottom of the Sun, Ulysses makes a giant loop around the Sun. The loop goes all the way out to Jupiter! Ulysses just reached the south pole of the Sun again. It was there in 1994 too. This pass of the south pole makes Ulysses the first probe to pass the south pole twice!

Ulysses will keep studying the Sun for a while. It will return to the north pole of the Sun in October 2001.

Last modified February 1, 2001 by Jennifer Bergman.

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Windows to the Universe, a project of the National Earth Science Teachers Association, is sponsored in part is sponsored in part through grants from federal agencies (NASA and NOAA), and partnerships with affiliated organizations, including the American Geophysical Union, the Howard Hughes Medical Institute, the Earth System Information Partnership, the American Meteorological Society, the National Center for Science Education, and TERC. The American Geophysical Union and the American Geosciences Institute are Windows to the Universe Founding Partners. NESTA welcomes new Institutional Affiliates in support of our ongoing programs, as well as collaborations on new projects. Contact NESTA for more information. NASA ESIP NCSE HHMI AGU AGI AMS NOAA