The sun unleashed a powerful M6.9 solar flare and CME on Aug. 25. A glancing blow could reach Earth on Aug. 28 and boost northern lights chances. Today (Aug. 25), the sun unleashed a powerful M6.9 solar flare from a restless Earth-facing sunspot, hurling a coronal mass ejection (CME) into space — and Earth could potentially be in the firing line. The M6.98 solar flare erupted from the active s... [2199 chars]