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Archive for the 'SOLAR ACTIVITY' Category

STEREO observed CME that turned satellite into zombie

July 8th, 2010 by

Observations from NASA’s twin Solar Terrestrial Relations Observatory (STEREO) spacecraft have allowed U.S. Naval Research Laboratory scientists to see recent solar activity that may have produced the first casualty of the new solar cycle #24. A coronal mass ejection from 3 April 2010 apparently resulted in a critical failure on the Galaxy 15 communications satellite (a.k.a. Zombiesat).
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NOAA: Mild Solar Storm Season Predicted

May 9th, 2009 by

Although its peak is still four years away, a new active period of Earth-threatening solar storms will be the weakest since 1928, predicts an international panel of experts led by NOAA’s Space Weather Prediction Center and funded by NASA. Despite the prediction, Earth is still vulnerable to a severe solar storm.

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NASA-funded study reveals hazards of severe space weather

January 6th, 2009 by

A NASA-funded study describes how extreme solar eruptions could have severe consequences for communications, power grids and other technology on Earth.

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NASA’S SDO to improve predictions of violent space weather

March 4th, 2008 by

Sometime between the end of 2008 and the beginning 2009, NASA will launch the Solar Dynamics Observatory (SDO) to examine how the Sun builds up and explosively releases magnetic energy, which powers severe space weather.

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Flares from far side of the Sun affect space weather

August 25th, 2007 by

Observations of solar flares by spacecraft at Mars, Venus and the Earth show that eruptions on the far side of the Sun may affect space weather back on Earth.

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Scientists one step closer to understanding killer electrons

July 11th, 2007 by

Settling a longstanding scientific debate, Los Alamos scientists have demonstrated conclusively how electromagnetic waves accelerate ordinary electrons in the belts of radiation outside Earth’s atmosphere to a state where they become “killer electrons,” particles that are hazardous to satellites, spacecraft, and astronauts.
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