Explosive events on the sun can blast particles to high speeds, causing intense radiation storms that can disable spacecraft and cause radiation sickness or cancer in unprotected astronauts. Scientists are now testing a new method that could give astronauts advance warning.

If humans live on the moon some day, they might turn on the weather forecast just as they do on Earth. But in space, they won't fear rain storms, but sun storms.

Scientists are now testing a new method that uses SOHO data to predict, in real-time, the approach and intensity of hazardous solar particles that would threaten astronauts and technology in space.

Consider it a case of exquisite timing. Just last week, solar physicists announced the beginning of a new solar cycle and now, Jan. 14th, the Ulysses spacecraft is flying over a key region of solar activity -- the sun's North Pole.

A scientist using the Solar and Heliospheric Observatory (SOHO) has found a way to forecast solar radiation storms. The new method offers as much as one hour advance warning, giving astronauts time to seek shelter.