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.
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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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
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76
This Thanksgiving, solar storms may produce faint auroras across the northern rim of the United States.
Space Exploration
Nov 27, 2024
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114
Scientists have constructed the first complete proton energy spectrum observed during an eruptive solar event in Martian space, deepening our understanding of the radiation environment around Mars.
Astronomy
Nov 22, 2024
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76
NASA supercomputers are shedding light on what causes some of the sun's most complex behaviors. Using data from the suite of active sun-watching spacecraft currently observing the star at the heart of our solar system, researchers ...
Astronomy
Nov 21, 2024
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36
Since ancient times, the sun has been known as a giver of light and heat, a source of life. Plants are coaxed from the Earth by its rays, bringing spring, followed by bountiful harvests.
Planetary Sciences
Nov 14, 2024
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