The technique of heliospheric imaging could be valuable for future space weather operations.
solar activity
Is There a Greenhouse Effect in the Ionosphere, Too? Likely Not
Controversial observations of long-term changes in the ionosphere appear to be explained by the Sun’s 11-year cycle of activity, not human greenhouse gas emissions.
To Understand Future Solar Activity, One Has to Know the Past
Short-term funding strategies present serious problems for programs like solar activity studies, where observations and analysis span decades or longer.
NASA Fleet Helps Predict Space Weather
Using 8 years of data collected via spacecraft, scientists produce hindcasts of plasma eruptions from the Sun. These will help improve forecasts.
Largest Flare of Past 9 Years Erupts from Sun
A massive flare and blast of charged particles toward Earth may disrupt satellites and communications and push auroras toward lower latitudes through tomorrow, according to space weather experts.
For Magnetic Reconnection Energy, O—not X—Might Mark the Spot
A new analysis of satellite data could upend conventional wisdom about how solar storms produce their dangerous radiation—not from X-shaped mergers of magnetic field lines but from swirling vortices.
Scientists Probe the Calm After Solar Storms
In forecasting the effects of solar storms, understanding how they subside—and not just how they arrive—will be crucial.
Plasma Waves Pinpointed at the Site of Magnetic Reconnection
When the Earth's and the Sun's magnetic fields meet, they realign in explosive and mysterious reconnections. Data suggest that plasma waves called kinetic Alfvén waves play a key role.
Lab Experiment Tests What Triggers Massive Solar Eruptions
In a first-of-its-kind demonstration, scientists provide experimental support for a possible mechanism behind the formation of coronal mass ejections.
Jupiter's Auroras Recharge Between Solar Storms
New research suggests that Jupiter's magnetic field replenishes its stock of plasma during lulls in solar activity, creating spectacular displays when a solar storm hits.