The sun's surface is a brilliant display of sunspots and flares driven by the solar magnetic field, which is internally generated through a process called dynamo action. Astrophysicists have assumed that the sun's field is ...
Astronomy
May 22, 2024
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37
For the first time, scientists have observed plasma waves from a solar flare focused by a coronal hole, akin to the focusing of sound waves responsible for the Rotunda effect in architecture or the focusing of light by a ...
Our sun actively produces solar flares that can impact Earth, with the strongest flares having the capacity to cause blackouts and disrupt communications—potentially on a global scale. While solar flares can be powerful, ...
Astronomy
Dec 6, 2023
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85
Alaskans and visitors may be able to see an artificial airglow in the sky created by the High-frequency Active Auroral Research Program during a four-day research campaign that starts Saturday.
Planetary Sciences
Nov 3, 2023
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355
A study from an international team led by researchers from Nagoya University in Japan and the University of New Hampshire in the United States has revealed the importance of the Earth's upper atmosphere in determining how ...
Planetary Sciences
Oct 30, 2023
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330
Researchers have developed new methods for using coronal dimmings observed in the solar corona for early diagnosis of powerful bursts of plasma from the sun.
Astronomy
Oct 9, 2023
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13
The ESA/NASA Solar Orbiter spacecraft has discovered a multitude of tiny jets of material escaping from the sun's outer atmosphere. Each jet lasts between 20 and 100 seconds, and expels plasma at around 100 km/s. These jets ...
Astronomy
Aug 25, 2023
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192
The sun's strong, dynamic magnetic field can catapult huge jets of plasma known as coronal mass ejections (CMEs) out into the solar system. Sometimes these hit Earth, where they can knock out power grids and damage satellites.
Astronomy
Jun 1, 2023
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118
With technology increasingly embedded in our everyday lives, it is becoming more important to understand space weather and its impacts on tech.
Earth Sciences
May 30, 2023
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41
The sun's rotation produces changes in its magnetic field, which flips completely every 11 years or so, triggering a phase of intense activity. Solar flares—huge eruptions from the surface of the sun lasting minutes or ...
Astronomy
May 16, 2023
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