Tag

Solar Physics

All articles tagged with #solar physics

space11 days 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

space13 days ago•75 min saved

CubeSat neutrino detector aims to illuminate solar core from orbit

Space.com reports the world’s first space-based neutrino detector, SNAPPY, has launched to a ~310‑mile Earth orbit aboard SpaceX CAS500‑2 for about two years. The 3U CubeSat carries gallium‑tungsten detector crystals to catch solar neutrinos closer to the Sun, testing space-based detection technology and potentially enabling future solar-neutrino missions and imaging of solar fusion shells.

via Space|

#cubesat #neutrinos #snappy

science1 month ago•4 min saved

Sun's Hidden Half Revealed: Magnetic Polarity Mapped from Helioseismic Clues

Scientists mapped magnetic polarity on the sun's far side for the first time by analyzing tiny shifts in helioseismic waves and using Hale’s polarity law, enabling magnetic maps of regions not directly visible from Earth and potentially improving early warnings of solar eruptions as they rotate into view.

via The Daily Galaxy|

#far-side-sun #helioseismology #magnetic-polarity

science4 months ago•3 min saved

Magnetic Avalanches Trigger Solar Flares, New Solar Orbiter View Reveals

ESA's Solar Orbiter captured high-cadence observations showing solar flares arise from avalanche-like magnetic reconnection: a weak disturbance spawns a cascade of twisted field strands that rapidly reconnect, creating bright ribbons, fast plasma outflows up to ~400 km/s, and continued plasma rain after the flare, implying energy moves from magnetic fields to solar plasma and this avalanche mechanism may be common across flares.

via Gizmodo|

#magnetic-reconnection #plasma-rain #science

space4 months ago•5 min saved

Solar Flare Revealed as Magnetic Avalanche, Not a Single Burst

ESA's Solar Orbiter captured real-time footage showing a solar flare igniting through a rapid cascade of magnetic reconnection events inside a twisted flux rope, producing high-speed plasma rain and energy transfer that redefines flares as magnetic avalanches rather than a single eruption.

via Indian Defence Review|

#magnetic-avalanche #solar-flare #solar-orbiter

science4 months ago•2 min saved

Scientists Break Records Studying the Sun's Most Active Region

Astronomers set a new record by continuously observing the Sun's active region NOAA 13664 for over 90 days using two spacecraft, providing valuable insights into solar activity and improving space weather predictions.

via ScienceAlert|

#noaa-13664 #science #solar-observatories

science4 months ago•2 min saved

Solar Orbiter Breaks Records with Extended Observation of Active Sunspot Region

Scientists used the Solar Orbiter to observe the active solar region NOAA 13664 for 94 days, the longest ever recorded, which helped link a major geomagnetic storm in May 2024 to solar activity, providing new insights into solar behavior and its impact on Earth.

via Gizmodo|

#geomagnetic-storm #science #solar-flares

science4 months ago•4 min saved

Exclusive Data Reveals New Insights into the Sun

A groundbreaking collaboration between the ground-based DKIST telescope and the space-based Solar Orbiter has provided new insights into the Sun's activity, including the discovery of tiny structures called 'campfires' and detailed observations of the Sun's magnetic fields, advancing our understanding of solar phenomena and their impact on Earth.

via Indian Defence Review|

#campfires #dkist #science

science5 months ago•6 min saved

Debunking the Myth: Is the Sun a Dwarf Star?

The sun is technically classified as a G2V main-sequence star, often called a dwarf star, but it is much larger than what is typically considered a dwarf star. It is a yellow, hydrogen-fusing star that will eventually become a red giant in about 5 billion years. Despite its name, the sun appears yellow due to atmospheric scattering, and it is the largest object in our solar system.

via Live Science|

#astronomy #dwarf-star #main-sequence-star

science5 months ago•3 min saved

Scientists Discover Missing Colors in the Sun’s Light

Scientists have discovered hundreds of mysterious missing wavelengths in the Sun's spectrum that remain unexplained despite over 200 years of study, highlighting gaps in current atomic data and the complex, dynamic nature of the Sun's atmosphere.

via The Daily Galaxy|

#fraunhofer-lines #science #solar-physics

science5 months ago•33 min saved

SOHO Celebrates 30 Years of Solar Observation

SOHO has been observing the Sun for 30 years, providing invaluable data that has revolutionized our understanding of solar phenomena, contributed to space weather forecasting, and supported numerous scientific discoveries and subsequent missions.

via Nature|

#heliophysics #science #soho

science6 months ago•2 min saved

Scientists Uncover Secrets Behind the Sun's 70-Year Enigma of 'Impossible Heat'

Scientists have finally observed small-scale torsional Alfvén waves across the Sun's corona, providing crucial evidence for understanding how the corona reaches millions of degrees Celsius and how solar winds are generated, which can improve space weather forecasting.

via ScienceAlert|

#alfven-waves #science #solar-physics

science6 months ago•4 min saved

Scientists Uncover Secrets Behind the Sun's Hot Atmosphere

New observations from the Daniel K. Inouye Solar Telescope suggest that Alfvén waves, magnetic waves traveling through the sun's corona, carry significant energy that may explain the long-standing mystery of why the sun's outer atmosphere is much hotter than its surface, potentially accounting for at least half of the heating required.

via Live Science|

#alfven-waves #corona #science

science7 months ago•3 min saved

Scientists Uncover Explanation for Rain on the Sun

Researchers at the University of Hawai'i have discovered that the mysterious rain on the Sun, composed of superheated plasma, is influenced by shifting flows of elements like iron, silicon, and magnesium in the Sun's corona. This finding helps explain the rapid formation of coronal rain and suggests new insights into solar atmospheric dynamics and coronal heating. The study challenges previous models assuming constant elemental distribution and opens avenues for further research into solar phenomena.

via ScienceAlert|

#coronal-rain #elemental-flows #plasma

science8 months ago•3 min saved

New Study Reveals Solar Flares Are Much Hotter Than Previously Believed

New research suggests that ions in solar flares may reach temperatures up to 60 million Kelvin, far hotter than previously thought, due to more effective heating mechanisms that favor ions over electrons, potentially altering our understanding of solar flare dynamics.

via ScienceAlert|

#ion-heating #science #solar-flares