Aurora over Maine

It has been a good week for auroras. Earlier this month active sunspot region 2158 rotated into view
and unleashed a series of flares and plasma ejections into the Solar System during its journey across
the Sun's disk. In particular, a pair of Coronal Mass Ejections (CMEs) impacted the Earth's magnetosphere
toward the end of last week, creating the most intense geomagnetic storm so far this year. Although power
outages were feared by some, the most dramatic effects of these impacting plasma clouds were auroras seen
as far south as Wisconsin, USA. In the featured image taken last Friday night, rays and sheets of multicolored
auroras were captured over Acadia National Park, in Maine, USA. Since another CME plasma cloud is currently
approaching the Earth, tonight offers another good chance to see an impressive auroral display.