Magnetic Fields, Electromagnetism, bioelectricity, Archives

Contributions to the peak 𝑃𝑅 from the bow shock and magnetopause at 𝜂 = 5.38018 × 108cm2s−1 for Case #1 (panel a), Case #2 (top of panel b), and Case #3 (bottom of panel b). The volumetric renderings show ∇ · Stotal in erg cm−3 s−1. -- astro-ph.EP

Atmospheres, Climate, Weather, Exoplanets, -moons, -comets, Habitable Zones, Magnetic Fields, Electromagnetism, bioelectricity,, Press Release, Space Weather & Heliophysics, TRAPPIST-1

Resistive MHD Simulations of Stellar Wind-Magnetosphere Coupling in TRAPPIST-1e

by Keith CowingApril 2, 2026April 2, 2026

Close-in terrestrial exoplanets around M dwarfs reside in dense, magnetized winds, where non-ideal plasma coupling can strongly affect how electromagnetic energy is redistributed within the dayside interaction region.

Scatter plots of potential candidate in frequency, drift rate and signal-to-noise ratio for each polarization channel. The color and the size for each point represent the value of SNR in log space. The green and red color bar is the frequency ranges of civil aviation and navigation satellites, respectively. The black dashed lines represent the expected drift rates for each observation date. -- astro-ph.IM

Astronomy & Telescopes, Biosignatures & Paleobiology, Comets and Asteroids, Intelligence & Language, Interstellar, Magnetic Fields, Electromagnetism, bioelectricity,, SETI & Technosignatures, Status Report

Narrowband Radio Technosignature Search Toward 3I/ATLAS With FAST

by Keith CowingMarch 21, 2026March 21, 2026

3I/ATLAS is the third confirmed interstellar object passing through the Solar System. In this work, we conduct narrowband radio technosignature search toward 3I/ATLAS using the Five-hundred-meter Aperture Spherical Telescope (FAST) […]

Numerical ocean-induction setup for Ganymede in a deep-ocean scenario with Re m = 1.77. Ganymede’s internal structure is depicted, featuring the ice crust, the deep ocean with its simulated zonal flow, the internal ice layer, the silicate mantle, and the metallic core. Yellow tubes visualize the magnetic field lines. The bottom-right panel shows how magnetic field lines are sheared by the zonal (east–west) jet flow in the ocean (blue/red denote westward/eastward jets, respectively), thereby reflecting the secondary magnetic field induced by such dynamics. -- astro-ph.EP

Astrogeology, Ganymede, Icy Worlds, Jupiter, Magnetic Fields, Electromagnetism, bioelectricity,, Mapping, Geodesy, Cartography, Bathymetry, Status Report, Water/Hycean Worlds & Oceanography

Motional Induction In Ganymede’s Ocean

by Keith CowingMarch 14, 2026March 14, 2026

We investigate the magnetic signature of oceanic circulation in Ganymede’s subsurface ocean using kinematic induction modeling. Our approach couples zonal jet flows from rotating thermal convection simulations with magnetic field […]

The reconstructed timeframe of the YSDP-4 drill core. (A) Depth-adjusted χfd% series (gray curve)

Astrogeology, Atmospheres, Climate, Weather, Biosignatures & Paleobiology, Extinction events, Gaia - Planetary Perspectives, Habitable Zones, Lava / magma ocean / Volcanic Worlds, Magnetic Fields, Electromagnetism, bioelectricity,, Origin & Evolution of Life, Press Release, Water/Hycean Worlds & Oceanography

New Study Reveals Asynchronous Land–ocean Responses To Ancient Ocean Anoxia

by Keith CowingMarch 9, 2026March 9, 2026

Earth experienced a period of intense, large-scale volcanism during the early Aptian. Around that time, it also experienced widespread ocean deoxygenation during the Oceanic Anoxic Event 1a (OAE1a) as well […]

ultraviolet aurorae on Ganymede ©️ NASA/JPL-Caltech/SwRI/UVS/ULiège/Gusbin/Bonfond

Ganymede, Jupiter, Magnetic Fields, Electromagnetism, bioelectricity,, Press Release, Radiation, Space Weather & Heliophysics

Similarities Between Auroras On Ganymede And Earth

by Keith CowingFebruary 25, 2026February 25, 2026

A team of astrophysicists from the Laboratory of Atmospheric and Planetary Physics (LPAP) has observed for the first time the fine details of the auroras on Ganymede, the only moon […]

Height scales of atmospheres of Solar System’s terrestrial planets. The solid lines show the temperature profiles against altitude, while the background color reflects the atmospheric pressure. Horizontal dashed lines denote the average positions of atmospheric boundaries: tropopause ("t"), stratopause ("s"), and mesopause ("m"). Vertical cyan lines depict the extension of ionospheres ("i") under typical conditions. The "⊙" symbol denotes the 100 mbar level. -- astro-ph.EP

Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Exoplanets, -moons, -comets, Gaia - Planetary Perspectives, Habitable Zones, Magnetic Fields, Electromagnetism, bioelectricity,, Status Report

Upper Atmosphere Dynamics And Drivers Of Volatiles Loss From Terrestrial-type (exo)Planets

by Keith CowingFebruary 18, 2026February 18, 2026

Volatile loss from exoplanetary atmospheres and its possible implications for the longevity of habitable surface conditions is a topic of vigorous debate currently.

Deep layers of molten rock inside some super-earths could generate powerful magnetic fields—potentially stronger than Earth’s—and help shield these exoplanets from harmful radiation. (University of Rochester Laboratory for Laser Energetics illustration / Michael Franchot)

Atmospheres, Climate, Weather, Biophysics, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Habitable Zones, Lava / magma ocean / Volcanic Worlds, Magnetic Fields, Electromagnetism, bioelectricity,, Press Release, Radiation

Hidden Magma Oceans Could Shield Rocky Exoplanets From Harmful Radiation

by Keith CowingJanuary 21, 2026January 21, 2026

Deep beneath the surface of distant exoplanets known as super-earths, oceans of molten rock may be doing something extraordinary: powering magnetic fields strong enough to shield entire planets from dangerous […]

Phylogenetic relationship among known OmcA/MtrC decaheme c-type cytochromes from diverse bacteria and the newly identified D. acetexigens MtrC detected in this study. Maximum-likelihood phylogenetic tree constructed from a concatenated alignment of the known diversity of OmcA/MtrC decaheme c-type cytochromes and the D. acetexigens MtrC detected in this study. Color codes were assigned by taxonomic order. Bootstrap support values ≥90% from 1000 resamples are indicated with filled black circles. The scale bar represents average changes per amino acid position. MtrC, OmcA, MtrH, MtrG, UndA, and MtrF indicate members of the MtrC family of proteins. MtrC of D. acetexigens is indicated with a red dot. A full resolution image of the tree is available in Supplementary Fig. 11. -- The ISME Journal

Extremeophiles and Extreme Environments, Genomics, Proteomics, Bioinformatics, Magnetic Fields, Electromagnetism, bioelectricity,, Microbiology & Virology, Press Release

Bacteria Reveal Hidden Powers Of Electricity Transfer

by Keith CowingJanuary 14, 2026January 14, 2026

Editor’s note: as we delve further into the myriad of ways that life on Earth operates, modes of operation once thought to be rare or limited to small niches are […]

Snapshots in the xy plane from the 0.1Eref (left) and 10Eref (right) simulation runs. Each snapshot is taken from the end of the run when steady-state has been achieved. The blue circle at x =0, y =0, represents the planetary body. White overlaid vectors depict the direction of velocity vectors. The colorbar shows the speed of the solar wind, which is initialized at 400 km/s on the right side of the figures. The 10Eref case has an inflated magnetosphere when compared to the 0.1Eref -- astro-ph.EP

Atmospheres, Climate, Weather, Exoplanets, -moons, -comets, Magnetic Fields, Electromagnetism, bioelectricity,, Status Report

Atmospheric Mass Flux As A Function Of Ionospheric Emission On Unmagnetized Earth

by Keith CowingJanuary 3, 2026January 2, 2026

We explore ion escape from, and solar ion deposition to, an unmagnetized Earth-like planet. We use RHybrid, an ion-kinetic electron-fluid code to simulate the global plasma interaction of unmagnetized Earth […]

An image of Caenorhabditis elegans, a tiny roundworm, showing internal structures including the intestine, pharynx, and body wall muscle. C. elegans is one of the simplest organisms with a nervous system. Scientists use it to study nervous system development, among other things. This image was captured with a quantitative orientation-independent differential interference contrast (OI-DIC) microscope. The scale bar is 100 µm. Source NIH/Marine Biological Laboratory/University of Chicago

Analog Studies, Desert Worlds, Extremeophiles and Extreme Environments, Genomics, Proteomics, Bioinformatics, Gravitational Biology, Habitable Zones, Magnetic Fields, Electromagnetism, bioelectricity,, Mars, Microbiology & Virology, Status Report

Born On Mars: Multigenerational Phenotypic Change In Caenorhabditis Elegans Under Martian Analog Gravity And Hypomagnetic Fields

by Keith CowingDecember 21, 2025December 21, 2025

Life on Mars will require organisms to endure sustained exposure to reduced gravity and near-absent planetary magnetism, yet little is known about how these environmental factors may combine to potentially […]

Magnetic Fields, Electromagnetism, bioelectricity,

Resistive MHD Simulations of Stellar Wind-Magnetosphere Coupling in TRAPPIST-1e

Narrowband Radio Technosignature Search Toward 3I/ATLAS With FAST

Motional Induction In Ganymede’s Ocean

New Study Reveals Asynchronous Land–ocean Responses To Ancient Ocean Anoxia

Similarities Between Auroras On Ganymede And Earth

Upper Atmosphere Dynamics And Drivers Of Volatiles Loss From Terrestrial-type (exo)Planets

Hidden Magma Oceans Could Shield Rocky Exoplanets From Harmful Radiation

Bacteria Reveal Hidden Powers Of Electricity Transfer

Atmospheric Mass Flux As A Function Of Ionospheric Emission On Unmagnetized Earth

Born On Mars: Multigenerational Phenotypic Change In Caenorhabditis Elegans Under Martian Analog Gravity And Hypomagnetic Fields

PJ Harvey Announces New Song “Voyager”

Fifty Years after Viking: The Promise of Solar System Microbiology and Microbial Ecology

Characterising Transiting Exoplanets At Long Orbital Period: Lessons Learned For PLATO From 10 Years Of Monitoring The HIP41378 System

Implications Of Self-consistent H2O Ice Optical Constants On Radiative Transfer Models Of Disks

The GAPS Programme at TNG LXXIV. A Reanalysis Of The Planetary Systems TOI-1272 And TOI-1694 With HARPS-N And Retraction Of The Planetary Interpretation Of TOI-1272 c