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solar activity

Solar flares took place much more frequently 4 billion years ago than today, bombarding Earth with energetic protons and radiation.
Posted inNews

Did Solar Flares Cook Up Life on Earth?

JoAnna Wendel, freelance science writer and illustrator by JoAnna Wendel 23 May 201612 October 2022

Scientists have found that "super" solar flares could have warmed the ancient planet and jump-started life.

Posted inEditors' Vox

Toward an Understanding of Earth-Affecting Solar Eruptions

by Y. Wang 30 March 201627 April 2022

Coronal mass ejection forecasting improves with technological developments and increasing availability of data.

van-allen-probes-artists-rendering
Posted inScience Updates

Radiation Belt Processes in a Declining Solar Cycle

by A. Y. Ukhorskiy, B. H. Mauk, D. G. Sibeck and R. L. Kessel 23 March 201627 March 2023

The Van Allen Probes began an extended mission in November to advance understanding of Earth's radiation belts.

Posted inResearch Spotlights

Satellite Shows Earth's Magnetic Field Bent During a Solar Storm

by Mark Zastrow 18 March 201613 April 2022

When solar storms strike, they weaken Earth's defenses against harmful radiation. New satellite measurements reveal just how much.

Posted inResearch Spotlights

Sun's Magnetic Fields Best at Forecasting Solar Cycle Peaks

by A. K. Higginson 24 February 201627 March 2023

Models based on the Sun's polar magnetic fields performed best in simulating the solar cycle and predicting solar behavior.

Posted inResearch Spotlights

Solar Storms Are More Predictable Than Hurricanes

by Mark Zastrow 22 February 201631 May 2022

An encouraging new study finds that solar storms don't propagate chaotically like hurricanes—their arrivals are more predictable, which should make it easier for our planet to prepare for them.

Posted inResearch Spotlights

New Space Weather Forecast Technique Fails to Improve Forecasts

by Mark Zastrow 18 February 201610 February 2023

For years, scientists have proposed upgrading the National Oceanic and Atmospheric Administration's solar storm forecasts to account for their tilt as they streak toward Earth. But does it help?

Posted inResearch Spotlights

New Model Predicts Big Solar Proton Storms

Sarah Stanley, Science Writer by Sarah Stanley 11 February 201622 February 2023

Forecasts of dangerous solar events could buy time for astronauts en route to the Moon or Mars.

Posted inResearch Spotlights

Electric "Tornadoes" in Space Drive Disturbances Down to Earth

by Mark Zastrow 23 December 201516 November 2021

New simulations show how shocks in space can trigger vortexes in Earth's magnetic field, causing magnetic disturbances that are detectable from the ground.

Posted inResearch Spotlights

Model of Solar Cycle's Impact on Climate Gets Upgrade

by Mark Zastrow 7 December 201527 March 2023

A new model of how the Sun's 11-year cycle affects climate leads to slight changes in model results on atmospheric chemistry, but temperature and wind results are consistent with the previous model.

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