November 4, 2021
[Alex on EARTHSKY.ORG] Aurora alert in effect for the next few days: the sun sent out a halo coronal mass ejection on November 2, 2021, due to arrive at Earth on November 4.
October 30, 2021
[Alex on EARTHSKY.ORG] A solar storm after an eruption on the sun is carrying plasma toward Earth, which should produce northern and southern lights this weekend.
September 1, 2021
[Alex on EARTHSKY.ORG] Aurora alert! A pair of coronal mass ejections will reach Earth September 1-2, 2021. Though not dangerous to satellites or the grid, they might cause auroras.
June 9, 2014
High latitude observers treated with spectacular aurora June 8 and June 9th. The CME that glanced Earth’s magnetosphere on June 7 started a minor geomagnetic disturbance just after the impact that grew into a G1 then G2 level geomagnetic storm […]
March 16, 2013
Look at for Aurora tonight and tomorrow at high latitudes! Yesterday’s coronal mass ejection (CME) is expected to sweep past Earth in the last half of today (March 16, 2013) sometime around 18UT (+- 7-8 hours). Forecasts are from minor […]
March 9, 2012
Nature never ceases to surprise and amaze. Just when it looked like the geomagnetic storm from yesterdays CME impacts had fizzled out, Earth’s magnetosphere continues its upset state. Even before the Kp index (a measure of the […]
October 26, 2011
Saturday, October 22, 2011, started like most any other day, lots of activity of varying size and shape was occurring on the Sun. Most people looking at the Sun that day remember the spectacular lightbulb shaped CME that occurred […]
October 26, 2011
A spectacular filament eruption from June 7, 2011 captured by the STEREO Ahead spacecraft with EUVI 304, Cor1 and Cor2. Happy Birthday STEREO!! October 26 ,2011 is the 5th anniversary of the launch of the STEREO mission and […]
January 16, 2011
Two coronal holes that develop over several days stand out in this image and video clip of the Sun from SDO’s AIA instrument (Jan. 9-12, 2010). In the extreme UV wavelength of 193 Angstroms, one dark coronal hole intensifies just […]