Solar activity as a research area focuses on the study of time-varying phenomena originating from the Sun’s magnetic field, including sunspots, flares, coronal mass ejections, solar wind variability, and associated irradiance changes. It integrates solar physics, plasma astrophysics, and space weather science to understand magnetic field generation via the solar dynamo, energy storage and release in the corona, and particle acceleration processes. This field employs multi-wavelength observations, in situ spacecraft measurements, and magnetohydrodynamic modeling to quantify solar variability and its coupling to the heliosphere, planetary magnetospheres, and upper atmospheres, with implications for technological systems and long-term space climate.
A new study led by researchers from the Yunnan Observatories of the Chinese Academy of Sciences has unveiled a novel mechanism for filament splitting and the formation of double-decker filaments. Their findings were published ...
Astronomy
Jul 18, 2025
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47
Solar Maximum 2025 is the expected peak of solar activity in Solar Cycle 25, characterized by heightened sunspots, solar flares, and coronal mass ejections. This peak is anticipated around mid to late 2025, coinciding with ...
Earth Sciences
Jul 7, 2025
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141
A trio of heliophysicists and satellite trackers at NASA Goddard Space Flight Center and the Goddard Planetary Heliophysics Institute at the University of Maryland has found evidence showing that Starlink satellites reenter ...
Southwest Research Institute scientists have discovered how solar activity affects the velocity distribution and evolution of helium pickup ions.
Astronomy
May 21, 2025
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61
An international team of scientists has discovered an extreme spike in radiocarbon corresponding to the year 12350 BC during the dusk of the last Ice Age. However, the strength of the event could not be assessed earlier because ...
Planetary Sciences
May 15, 2025
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The sun's activity has a profound impact on satellites, humans in space and technology on Earth.
Astrobiology
May 7, 2025
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42
A recent study has shed new light on the dynamic evolution of solar prominences. By integrating high-resolution observational data from the one-meter New Vacuum Solar Telescope (NVST) with spectral observations from NASA's ...
Astronomy
Mar 18, 2025
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23
The sun, a searing hot sphere of gas primarily composed of hydrogen and helium, boasts surface and outer atmospheric temperatures ranging from 10,000 to 3.6 million degrees Fahrenheit on its surface and its atmosphere's outermost ...
Planetary Sciences
Jan 18, 2025
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109
A study published in The Astrophysical Journal Letters, introduces a newly defined "filament channel" function. This new function provides a novel theoretical foundation for predicting solar eruptions by determining whether ...
Astronomy
Jan 7, 2025
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25
There is no question that the sun is a temperamental star, as this year's unusually strong solar storms show. Some of them led to remarkable auroras even at low latitudes. But can our star become even more furious?
Astronomy
Dec 12, 2024
1
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