
by Associated Press
Published: Wed, September 24, 2008 - 1:01 am CST
WASHINGTON (AP) - Our sun has gotten weaker.But not to worry. Scientists say it's too small a difference to
change life on Earth. In fact, it means satellites can stay in
orbit a little longer.
New data from a NASA-European solar probe finds that the solar
wind is significantly weaker, cooler and less dense than it's been
in 50 years. The solar wind is a stream of charged particles
ejected from the sun's upper atmosphere.
Also, a NASA solar physicist says for the first time in about a
century, the sun went for two months this summer without any
sunspots. A cluster of eight sunspots did surface yesterday.
Sunspots are temporary regions of high magnetic activity.
A scientist at the Southwest Research Institute says a change in
the sun's magnetic flux appears to have caused the slight
weakening. Experts don't know why but say there have been similar
fluctuations in the past.
NASA Marks 50th Anniversary Of Monkeys In Space









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