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News
4.6-Billion-Year-Old Meteorite Reveals a Surprisingly Strong Primordial Magnetic Field
3+ day, 21+ hour ago (763+ words) Ancient meteorite minerals reveal a surprisingly strong magnetic field from the solar system’s first...The measurements indicate that a magnetic field was already present during the solar nebula stage....The researchers estimate that it was stronger than Earth’s magnetic field…...
Meteorite Grains Preserve Evidence of a Magnetic Field in the Infant Solar System — Curiosmos
2+ day, 5+ hour ago (251+ words) Tiny mineral grains inside an Antarctic meteorite may preserve the oldest evidence yet of a magnetic...field in the young solar system....field today....Some contain magnetic minerals that could have locked in the strength and direction of the field…...
How a star with an extreme magnetic field could prove space is not empty
2+ week, 12+ hour ago (440+ words) The trouble with testing this prediction — called vacuum birefringence — is that the magnetic field has...Neutron stars with powerful magnetic fields are called magnetars....radio frequency measurements, then, the team could piece together the geometry of the magnetar’s magnetic...field…...
oceans combined, stirred by planet-spanning convective currents—but a 2025 model found that the magnetic field generated specifically by that moving saltwater would be weaker than one nanotesla, probably too faint for Europa Clipper or JUICE to isolate from the magnetic noise around Jupiter.
1+ week, 2+ day ago (1626+ words) Europa's moving saltwater should generate a magnetic field, but a 2025 model puts that separate circulation...signal below one nanotesla in Jupiter's noisy magnetic environment....Move enough of it through Jupiter’s magnetic field and it should generate an additional magnetic field…...
Powerful magnetic fields could be trapping giant stellar eruptions before they escape
2+ week, 1+ hour ago (1201+ words) The effect becomes important at magnetic field strengths around 100 gauss in the modeled stellar conditions...Active stars can possess surface magnetic fields ranging from about 10 to 1,000 gauss, making magnetic...One proposed explanation focuses on magnetic fields....More magnetically active stars…...
Powerful new magnetic system could help spacecraft survive the brutal heat of reentry
2+ week, 23+ hour ago (962+ words) A different approach could eventually use magnetic fields to push some of that superheated gas away....An applied magnetic field interacts with currents in the weakly ionized plasma and generates a Lorentz...In one numerical study described by the researchers,…...
The Magnetic Face of Plasma Irregularities on Mars - Eos
2+ week, 6+ day ago (228+ words) nature in the terrestrial ionosphere: the variations in density are accompanied by changes in the magnetic...field....The magnetic field variations would reach the level of 1 nano-Tesla for plasma density variations up...
Tiny Vortices spotted on the Sun for the first time: Scientists say they could explain how magnetic energy
6+ day, 3+ hour ago (892+ words) Tiny swirls appear around the Sun's magnetic patches Strong magnetic fields become concentrated along...At ordinary telescope resolutions, the edges between magnetic and non-magnetic regions appear relatively...Magnetic field lines extend from the Sun's surface into its outer atmosphere.......
Ancient Dust Grains Hold Magnetic Clues to the Sun's Birth
2+ week, 1+ day ago (367+ words) That's because they record the state of the magnetic field in the protostellar nebula from which Earth...A cross section of the DOM 08006 meteorite, found in the Dominion Range, Victoria Land, East Antarctica...Inclusions in this meteorite show the imprint…...
NASA spacecraft detects a rare, toothpaste-like magnetic effect squeezing Mars’ atmosphere for the first
3+ week, 2+ day ago (990+ words) Earth sits inside a vast magnetic bubble....Its internal magnetic dynamo shut down billions of years ago....The solar wind drapes magnetic field lines around the electrically charged upper atmosphere, forming...Known as the Zwan-Wolf effect, it squeezes charged particles…...