Below you can find the Observed for centuries they seem to have about an 11-year cycle & possess powerful solar magnetic fields Jeopardy Words Answer. The answer to Observed for centuries they seem to have about an 11-year cycle & possess powerful solar magnetic fields has 8 letters. This clue belongs to the Cycling category and is part of Jeopardy Word Level 2007. If you scroll near the bottom you will find other clues and answers part of level 2007