Aurora Borealis Might Be Visible in the Far North Skies Tonight

Skygazers in the northern region of the US and Canada might catch a glimpse of the Northern Lights Wednesday night and into Thursday. The NOAA Space Weather Prediction Center issued a G3 (strong) geomagnetic storm watch for April 16, when plasma ejected from the sun is expected to reach Earth's magnetic field. Minor geomagnetic storm conditions are likely to carry on until April 17, the agency reported. The colorful lights splashed across the night sky are caused by geomagnetic storms in our atmosphere, and the SWPC pays attention to when these might occur. Geomagnetic storms in the atmosphere can arise from a cosmic phenomenon called coronal mass ejections. These surging ejections of solar wind come from the corona, the sun's outermost layer. CMEs consist of plasma and magnetic fields and can take hours or days to reach Earth. When CMEs arrive, they cause disturbances in our atmosphere by disrupting our planet's magnetic field. This creates geomagnetic storms. Coming sooner than exp ... Read full article.