Kepler and TESS observations led to the discovery of many close-in super Earths, including some with ultra-short orbital periods (≲1 day).
magnetic field
![Stokes I (top), polarized intensity (PI) (middle) and polarization fraction (PF) (bottom) at 0.87, 1.3, 2.1 and 2.7 mm wavelengths plotted against right ascension (Δα) and declination (Δδ). Polarization vectors are also shown on the PI and PF images. The Stokes I and PI are converted to the brightness temperature (TB) by assuming the Rayleigh–Jeans approximation. The PF and polarization vectors are plotted where the polarized intensity is detected above the 3σ noise level. Contours on the PI and PF images indicate the brightness temperatures of the Stokes I emission of [0.1, 1, 10, 20] K for 0.87 mm, [0.1, 1, 5, 10, 20] K for 1.3 mm, [0.1, 1, 5, 9] K for 2.1 mm and [0.06, 0.3, 1, 3] K for 2.7 mm. The resolution (beam size) is shown as a small ellipse in the lower left corner of each panel. -- NAOJ](https://i0.wp.com/astrobiology.com/wp-content/uploads/2025/02/Stellar-Magnetic-Fingerprints.png?resize=1200%2C719&ssl=1)
Posted inAstrogeology, Astronomy & Telescopes, Exoplanets, -moons, -comets, Magnetic Fields, Electromagnetism, bioelectricity,, Press Release
Stellar Magnetic Fingerprints And Planetary Formation
For the first time astronomers have succeeded in observing the magnetic field around a young star where planets are thought to be forming. The team was able to use dust […]
Posted inAstrogeology, Biogeochemical Cycles & Geobiology, Habitable Zones, Magnetic Fields, Electromagnetism, bioelectricity,, Mars, Sample Return, Status Report
What We Can Learn About Mars From The Magnetism of Returned Samples
The Red Planet is a magnetic planet. The Martian crust contains strong magnetization from a core dynamo that likely was active during the Noachian period when the surface may have […]
Posted inAtmospheres, Climate, Weather, Exoplanets, -moons, -comets, Magnetic Fields, Electromagnetism, bioelectricity,, Space Weather & Heliophysics, Status Report
Ohmic Heating In The Upper Atmosphere of Hot Exoplanets The Influence of a Time-varying Magnetic Field
Exoplanets on close-in orbit are subject to intense X-ray and ultraviolet (XUV) irradiation from their star. Their atmosphere therefore heats up, sometimes to the point where it thermally escapes from […]
Posted inAriel, Astrogeology, Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Europa, Exploration Gear & Tech, Ganymede, Ice Giant, Icy Worlds, Magnetic Fields, Electromagnetism, bioelectricity,, Miranda, Oberon, Status Report, Titania, Umbriel, Uranus, Water/Hycean Worlds & Oceanography
Detecting Planetary Oceans: Application To The Uranus System
The discovery of Europa’s subsurface ocean has spawned a strong desire by the planetary community to return and assess the ocean’s habitability using the magnetic induction signal that Europa generates.
Posted inAI - Data - Apps - Cybernetics, Ice Giant, Icy Worlds, Imaging & Spectroscopy, Missions & Hardware, Press Release, Space Weather & Heliophysics, Uranus
Mining Old Data From NASA’s Voyager 2 Solves Several Uranus Mysteries
NASA’s Voyager 2 flyby of Uranus decades ago shaped scientists’ understanding of the planet but also introduced unexplained oddities. A recent data dive has offered answers.
Posted inAstrochemistry, Astrogeology, Biochemistry & Organic Chemistry, Biosignatures & Paleobiology, Comets and Asteroids, Icy Worlds, Interstellar, Magnetic Fields, Electromagnetism, bioelectricity,, Meteorites & Asteroids, Press Release
Asteroid Grains Shed Light On The Outer Solar System’s Origins
Tiny grains from a distant asteroid are revealing clues to the magnetic forces that shaped the far reaches of the solar system over 4.6 billion years ago.
Posted inHabitable Zones, Magnetic Fields, Electromagnetism, bioelectricity,, Radiation, Space Weather & Heliophysics, Status Report
Space Weather Forecasts: Monitoring The Daily Variation of Sun-Earth Magnetic Fields Using Galactic Cosmic Rays
The interplanetary magnetic field (IMF) between the Sun and Earth is an extension of the solar magnetic field carried by the solar wind into interplanetary space.
Posted inAtmospheres, Climate, Weather, Habitable Zones, Magnetic Fields, Electromagnetism, bioelectricity,, Mars, Press Release, Radiation, Space Weather & Heliophysics
Influence Of Upstream Solar Wind On Magnetic Field Distribution In The Martian Nightside Ionosphere
This study is led by Postdoctoral researcher Jiawei Gao from IGGCAS. Unlike Earth, Mars lacks a global dipolar magnetic field; the planet does have locally distributed crustal magnetic fields.
Posted inAtmospheres, Climate, Weather, Biophysics, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Habitable Zones, Magnetic Fields, Electromagnetism, bioelectricity,, Press Release, Space Weather & Heliophysics
Exploring The Effects Of Stellar Magnetism On Potential Habitability Of Exoplanets
Interest in Earth-like planets orbiting within the habitable zone of their host stars has surged, driven by the quest to discover life beyond our solar system. But the habitability of […]