On Tuesday evening, October 8, a cor o n a l mass ejection (CME) erupted from the Sun, hurtling through space at speeds estimated at 2.9 million mi l e s pe r hour. Even at those incompreh ensible speeds, it took days to traverse the 93 million miles between the sun and earth.Impacting the planet on Thursday, October 10, the CME caused a G4-level (severe) geomagnetic storm. According to ...