Tag

Coronal Hole

All articles tagged with #coronal hole

space1 month ago•62 min saved

Giant Solar Hole Could Bring Northern Lights Across Several U.S. States This Weekend

A large coronal hole opened in the Sun’s atmosphere, sending high-speed solar wind toward Earth and potentially lighting up the Northern Lights across several northern U.S. states Friday night into Saturday morning (Idaho to New York). NOAA forecasts gusty geomagnetic activity (possible G2 storm), which could cause visible auroras under darker skies aided by a new moon. The auroras result from solar particles interacting with Earth’s atmosphere near the poles, driven by coronal holes and related solar wind structures.

via Live Science|

#aurora-borealis #coronal-hole #geomagnetic-storm

science5 months ago•0 min saved

Solar Activity Alert: Sunspot, Solar Flare, and Geomagnetic Storm Warnings

NOAA has issued a G3 warning due to effects from a coronal hole high-speed stream, impacting radio communications and navigation, with conditions expected to persist into Wednesday evening, December 3, 2025.

via National Oceanic and Atmospheric Administration (NOAA) (.gov)|

#coronal-hole #g3-warning #noaa

science7 months ago•1 min saved

Northern Lights Visible in Multiple U.S. States Tonight

The northern lights may be visible in northern U.S. states due to minor geomagnetic storms caused by a coronal hole on the Sun, with the best viewing times between 10 p.m. and 2 a.m. and visibility extending to parts of Washington, Idaho, Montana, North Dakota, Minnesota, Wisconsin, Michigan, Maine, and Alaska.

via Forbes|

#aurora #coronal-hole #geomagnetic-storms

science8 months ago•4 min saved

Butterfly-Shaped Sun Hole May Trigger Geomagnetic Storm Sept. 13-14

A large butterfly-shaped coronal hole in the sun's atmosphere is sending solar wind toward Earth, potentially causing minor to moderate geomagnetic storms and spectacular auroras during September 13-14, especially around the autumn equinox when Earth's magnetic field is more receptive to solar wind interactions.

via Space|

#auroras #coronal-hole #geomagnetic-storm

science11 months ago•3 min saved

Northern Lights Likely Visible Tonight in Multiple US States

A coronal hole in the sun is sending charged particles toward Earth, likely causing intense auroras visible from about 15 U.S. states, especially in Alaska and Canada, due to a moderate geomagnetic storm.

via Live Science|

#auroras #coronal-hole #geomagnetic-storm

science11 months ago•1 min saved

Giant Sun Hole Sends Solar Wind Toward Earth

A large coronal hole has opened in the Sun's southern hemisphere, releasing high-speed solar wind that is expected to cause a moderate G2 geomagnetic storm around June 14, potentially leading to auroras visible at high latitudes.

via ScienceAlert|

#auroras #coronal-hole #geomagnetic-storm

science2 years ago•4 min saved

"Scientists Capture First Focused Plasma Wave on the Sun"

Scientists have observed plasma waves from a solar flare being focused by a coronal hole for the first time, similar to how lenses focus light. This discovery, made using data from NASA's Solar Dynamics Observatory, could help diagnose plasma properties and investigate wave focusing in other astronomical systems.

via Phys.org|

#coronal-hole #magnetohydrodynamics #plasma-waves

space2 years ago•3 min saved

"Enormous Sun Hole Threatens Earth with Solar Storm"

Scientists have observed a massive coronal hole in the atmosphere of the Sun, measuring more than five times the diameter of Jupiter. This temporary region of cool, less dense plasma is releasing a forceful solar wind that is blasting through the Solar System. While the hole was pointed towards Earth a few days ago, resulting in a mild solar storm, experts believe it will soon rotate away from our planet. This occurrence is part of the Sun's regular cycle of activity, with solar maximum expected to take place in 2024. Although the recent coronal hole could lead to a geomagnetic storm, it has not been as powerful as initially anticipated.

via Bored Panda|

#coronal-hole #solar-maximum #solar-system

science-and-technology2 years ago•1 min saved

Enormous Sun Hole Poses Threat to Earth

A large dark hole, known as a coronal hole, wider than 60 Earths has opened up on the sun's surface, emitting powerful streams of unusually fast radiation called solar wind. The solar wind is heading towards Earth and could potentially trigger a moderate geomagnetic storm, leading to radio blackouts. NASA explains that coronal holes appear dark because they are cooler, less dense regions with open, unipolar magnetic fields, allowing the solar wind to escape more easily into space.

via FOX 13 News Utah|

#coronal-hole #geomagnetic-storm #nasa

science2 years ago•1 min saved

"Enormous Sun Hole Threatens Earth with Solar Blast"

Scientists have discovered a massive coronal hole on the sun's surface, equivalent to about 60 Earths in size. The hole, which started forming on December 2, reached its maximum width of about 497,000 miles in just 24 hours. Although temporary, the hole could have caused disruptions such as geomagnetic storms and radio signal interference. The duration of the hole is uncertain, but most coronal holes last for more than a full solar rotation of about 27 days.

via Boston 25 News|

#coronal-hole #geomagnetic-storm #nasa

space-science2 years ago•1 min saved

Solar Threat: Massive Hole in the Sun Poses Dangers to Earth

A massive hole, measuring more than 60 times the diameter of the Earth, has opened up in the Sun's atmosphere. These coronal holes occur when the Sun's magnetic field allows a stream of its upper atmosphere to pour out as solar wind. While this can potentially cause disruptions to satellites and the electrical grid, scientists are not expecting any major disruptions from this particular hole. The Sun's solar activity is currently stronger than expected, indicating that more awe-inspiring events may occur in the near future.

via Futurism|

#coronal-hole #geomagnetic-storms #solar-activity

space2 years ago•3 min saved

Massive Solar Wind Blast Threatens Earth as Gaping Hole in Sun Expands

A massive coronal hole on the Sun, over five times larger than Jupiter, has been unleashing a powerful solar wind that recently directed a stream of particles towards Earth, resulting in a mild solar storm. This hole is part of the Sun's activity cycle, which includes sunspots, solar flares, and coronal mass ejections. As we approach solar maximum in 2024, the Sun's magnetic field will reverse polarity. While the current solar cycle has been stronger than expected, the maximum sunspot number is predicted to be below average.

via ScienceAlert|

#coronal-hole #solar-maximum #solar-storm

science2 years ago•1 min saved

"Unveiling the Mystery: The Sun's Second Giant Hole and Its Significance"

A large coronal hole has opened up on the Sun's surface, which is large enough to fit 20 Earths inside. While these holes usually appear near the poles, this one is near the equator, potentially leading to visible auroras on Earth as the Sun's particles shoot across the solar system. Despite the recent powerful solar storm causing geomagnetic storms and light shows, experts assure that there is no reason for concern as it did not cause any damage to satellites or power grids on Earth.

via Twisted Sifter|

#aurora #coronal-hole #geomagnetic-storm

science3 years ago•4 min saved

Craft discovers source of elusive solar winds through sun-kissing mission.

The Parker Solar Probe has detected the source of the fast solar wind that blows from the Sun's corona through a hole in its atmosphere. The probe's readings suggest that a specific type of magnetic reconnection is what drives this powerful force of nature. The coronal hole is a bit like a shower head, with roughly evenly spaced jets emerging from places where magnetic field lines "funnel" into and out of the surface of the Sun. The findings provide strong evidence that it's reconnection that's providing the energy source of the fast solar wind.

via ScienceAlert|

#coronal-hole #magnetic-reconnection #parker-solar-probe

science3 years ago•2 min saved

Massive Coronal Holes on Sun Threaten Earth with High-Speed Solar Winds

Two giant coronal holes have opened up on the surface of the Sun, with the second one potentially sending solar winds measuring millions of miles per hour towards Earth. The location of the second hole, which is right on the Sun's equator, makes it particularly interesting. While the effects are usually not a danger to Earth, the winds could potentially impact Earth's magnetic field and affect satellites and technology.

via indy100|

#coronal-hole #earth #science