Geomagnetic storms induce fast plasma flows next to the aurora and affect space weather. Lin et al. explain the origin of a special “dawnside” plasma stream that occurs only during extreme storm events.
As solar max approaches, new tech is on call.
Helioseismology allows scientists to study the interior of the Sun, solve some basic physics mysteries, and forecast space weather.
Each solar cycle might seem like the same old story, but one thing has changed significantly since the previous solar maximum–our technology.
Five decades of data revealed a star undergoing a pause in magnetic activity similar to what the Sun experienced almost 400 years ago.
Coronal mass ejections from stars have eluded easy observation, so scientists are looking at what’s left behind.
With new missions underway and planned, China is stepping up to observe our nearest stellar neighbor.
The Solar Orbiter just completed its commissioning phase while en route to the Sun. It has already provided valuable looks at solar campfires and Venus’s magnetic fields, and it promises much more.
Thanks to last-minute telescope time, researchers pieced together the sequence of events that caused Betelgeuse’s Great Dimming last year.
Proxima Centauri recently let loose a blast of radiation, and ground- and space-based telescopes detected the record-setting event at wavelengths ranging from radio to the ultraviolet.