Understanding the magnitude and occurrence of solar storms is key to predicting events that can be harmful to thousands of Earth-orbiting satellites and the welfare of astronauts.
After almost 8 decades, astronomers still debate the reasons why the Sun and sun-like stars must possess coronae. Philip Judge re-examines the problem and compares it to that of a detective trying to find the lead pipe or smoking gun at the scene of a murder.
Earth’s equatorial ionosphere exhibits significant and unpredictable day-to-day variations in density and morphology. This presents difficulties in preparing for adverse impacts on technological systems even 24 hours in advance.
TIMED/GUVI observed thermospheric column ∑O/N2 depletion in both hemispheres in March 2017.
The author reviews why, after almost 8 decades, we still have a coronal heating problem.
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