Tag

Coronal Mass Ejections

All articles tagged with #coronal mass ejections

space1 month ago•2 min saved

NOAA's SOLAR-1 Goes Live, Boosting U.S. Space Weather Readiness

NOAA’s SOLAR-1, the United States’ first satellite designed for continuous, operational space weather observations, has entered service after its year-long journey to the Sun-Earth L1 point. It will provide 24/7 real-time data on solar wind and CMEs, delivering CME imagery within about 30 minutes and in-situ data within five minutes to support warnings and decision-making for critical infrastructure, satellites, aviation, national security, and human spaceflight. Data will be publicly available via NOAA’s SWPC portal, strengthening preparedness for space-weather events and missions like Artemis II.

via National Oceanic and Atmospheric Administration (.gov)|

#coronal-mass-ejections #l1 #noaa

weather1 month ago•11 min saved

Aurora could light Washington skies as strong solar storm arrives

NOAA has issued a G3 strong geomagnetic storm watch for Thursday night, with a chance of reaching G4, which could bring the northern lights to Washington. The display is tied to coronal mass ejections from the sun on June 3; viewing is best outside city lights between about 10 p.m. and 2 a.m., though an 82%-lit waning moon could hinder visibility. The aurora is expected to fade by Friday night.

via MyNorthwest.com|

#aurora-borealis #coronal-mass-ejections #geomagnetic-storm

space1 month ago•73 min saved

Sun unleashes triple solar flares, boosting chances for vivid northern lights

Three major solar flares erupted from sunspot region 4455 in under 24 hours—M9.3, M7.9 and an X1—that triggered radio blackouts on Earth and launched Earth-directed CMEs. With geomagnetic storm activity expected (G1–G3) in the coming days, forecasters say auroras could appear at lower latitudes if the CMEs hit as anticipated (potentially around June 4–6).

via Space|

#auroras #coronal-mass-ejections #solar-flares

space1 month ago•4 min saved

Sun Sets New Solar Record with 19-Day Radio Burst

A 19-day-long Type IV solar radio burst—the longest on record—was observed by four spacecraft (STEREO, Parker Solar Probe, Wind, and Solar Orbiter). Researchers traced the event to a large helmet streamer energized by three rapid coronal mass ejections, explaining why some solar radio bursts persist for days and aiding space weather forecasting. The findings were published in The Astrophysical Journal Letters.

via ScienceAlert|

#coronal-mass-ejections #helmet-streamer #solar-physics

space1 month ago•6 min saved

Sun's 19-Day Radio Burst Sets New Solar Record

NASA scientists tracked a Type IV solar radio burst that lasted 19 days in August 2025—the longest on record—originating from a helmet streamer in the Sun’s atmosphere. The event may have been sustained by three coronal mass ejections and was observed by a fleet of missions (STEREO, Parker Solar Probe, Wind, Solar Orbiter) across the inner solar system, enabling a detailed timeline. Understanding these long-lasting bursts could improve space weather forecasts and protect satellites and spacecraft.

via SciTechDaily|

#coronal-mass-ejections #helmet-streamer #solar-physics

space-and-spaceflight1 month ago•16 min saved

Sun's 19-Day Radio Burst Traced to Helmet Streamer, NASA Study Finds

Four NASA missions captured a record-breaking 19-day solar radio burst originating from a helmet streamer in the Sun’s corona, likely powered by multiple coronal mass ejections; researchers developed a new technique to localize the source, aiding space-weather forecasting.

via Gizmodo|

#coronal-mass-ejections #fast-radio-burst #helmet-streamer

science1 month ago•9 min saved

The Sun's Long-Lived Radio Signal Says It's Time to Rethink Solar Transients

A 19-day Type IV solar radio burst from a helmet streamer, likely re-energized by three CMEs, suggests coronal magnetic structures can trap electrons for weeks, making the event a persistent rather than transient structure and prompting a rethink of how solar activity and exoplanet habitability are modeled.

via Space Daily|

#coronal-mass-ejections #helmet-streamer #magnetic-fields

space1 month ago•8 min saved

Sun's 19-Day Radio Burst Sets New Record, Tracked Across the Solar System

NASA and international spacecraft tracked a 19-day Type IV solar radio burst—the longest ever observed—originating from a helmet streamer in the Sun's outer atmosphere. The event, likely powered by a sequence of three coronal mass ejections, kept electrons trapped and replenished, extending radio emissions well beyond typical durations. Observations from Parker Solar Probe, Solar Orbiter, STEREO, and Wind allowed near-continuous monitoring as the Sun rotated, offering new insights for forecasting space weather and understanding large-scale solar magnetic structures.

via The Daily Galaxy|

#coronal-mass-ejections #nasa #solar-physics

science2 months ago•22 min saved

Twin X-class solar flares trigger radio blackouts on Earth, NASA says

NASA reports two X-class solar flares within seven hours—X2.4 on April 23 and X2.5 on April 24—that knocked out radio signals on Earth’s dayside and likely accompanied by CMEs. While the sunspot’s position makes a direct Earth impact unlikely, forecasters say a glancing CME could bring geomagnetic activity and possibly auroras as paths are monitored.

via New York Post|

#coronal-mass-ejections #nasa #radio-blackout

space3 months ago•2 min saved

Solar Storm Puts Artemis 2 Launch Window at Risk

A Sun X1.4 flare from active region 4405 triggered a radio blackout and a coronal mass ejection heading toward Earth, prompting a G2 geomagnetic storm watch as Artemis 2’s launch window nears; NASA says there’s an 80% chance of favorable conditions on Wednesday, but CME timing could delay the mission if communications or navigation are affected.

via Gizmodo|

#artemis-2 #coronal-mass-ejections #geomagnetic-storms

science5 months ago•34 min saved

Sun Unleashes Quartet of Flares, Foreshadowing a Wild Week for Space Weather

The Sun erupted four strong X-class flares from sunspot cluster RGN 4366, including an X8.1—the most powerful since October 2024—potentially boosting energetic particle events and coronal mass ejections. CMEs can illuminate auroras but also disrupt satellites, power grids, and communications. Forecasters say more “exciting activity” could be on the way as the Sun remains unusually active during its 11‑year cycle, even though overall activity is expected to wind down later this decade.

via Yahoo|

#coronal-mass-ejections #science #solar-dynamics-observatory

science5 months ago•1 min saved

Growing Sunspot 4366 Sparks Flares, CME Watch Continues

NOAA reports that sunspot group RGN 4366 has grown into a complex region capable of producing flares from M1 to X1, but no coronal mass ejections (CMEs) have been observed yet. The region remains the primary feature to watch during the week of 1–7 February 2026. Current NOAA space weather scales show minor radio blackout risks (R1) with HF radio degradation on the sunlit side.

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

#coronal-mass-ejections #noaa #science

science9 months ago•3 min saved

Multiple Solar Events to Ignite Northern Lights Across U.S. This Week

A series of four coronal mass ejections from the sun are expected to reach Earth between October 15 and 17, potentially triggering minor geomagnetic storms and impressive northern lights displays in northern regions like Canada, northern U.S., and northern Europe, with effects possibly lasting several days.

via Space|

#auroras #coronal-mass-ejections #earth-impact

science10 months ago•5 min saved

Solar Orbiter uncovers the source of the Sun's fastest electrons

Scientists using the Solar Orbiter have traced high-speed electrons back to the sun, discovering they originate from two types of solar outbursts: small-scale solar flares and larger coronal mass ejections, which has implications for understanding space weather and protecting spacecraft.

via Space|

#coronal-mass-ejections #science #solar-energetic-electrons

science-and-exploration10 months ago•6 min saved

Solar Orbiter Unveils the Origin of Sun's Fastest Particles

The Solar Orbiter mission has identified two distinct sources of energetic electrons from the Sun—solar flares and coronal mass ejections—by observing over 300 events, which enhances understanding of space weather and helps improve forecasting to protect spacecraft and astronauts.

via European Space Agency|

#coronal-mass-ejections #science-and-exploration #solar-energetic-electrons