Cycles, eruptions and sunspots - exploring our Sun
Friday, July 11, 2008 - 08:28
in Astronomy & Space
The Sun, a burning ball of hydrogen and helium a million kilometres wide, is our source of energy and light, and a constant focus of scientific study. Thanks to the SOHO and Ulysses missions we have recorded solar activity through the 11 year cycle and observed its magnetic poles, yet there are many questions still unanswered, including the hot topic of the possible role of of the Sun in climate change on Earth.