September
26, 2007
SOHO Mission Discovers Rare Comet (NASA Feature)
The
Solar and Heliospheric Observatory (SOHO) has discovered a rare
periodic comet. SOHO has already discovered more than 1,350 comets
during its mission, but this is the first time one of its discoveries
officially has been designated periodic.
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Image
Credit: ESA/NASA
September
18, 2007
Magnetic Trilobite
(NASA Feature)
"We've
never seen anything quite like it," says solar physicist
Lika Guhathakurta from NASA headquarters.Last week she sat in
an audience of nearly two hundred colleagues at the "Living
with a Star" workshop in Boulder, Colorado, and watched in
amazement as Saku Tsuneta of Japan played a movie of sunspot 10926
breaking through the turbulent surface of the sun. Before their
very eyes an object as big as a planet materialized, and no one
was prepared for the form it took.
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Image
credit: JAXA
September
14, 2007
Noxious Activity (SpaceWeather.com)
Scientists
attending the Living With a Star workshop in Boulder, Colorado,
learned yesterday that solar storms can have long-lasting effects
on Earth's ozone layer. Charles Jackman of the Goddard Space
Flight Center reported that solar protons hitting Earth in July
2000 altered the chemistry of the upper atmosphere, resulting
in "huge enhancements (>100%) in middle stratospheric
NOx."
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