![Average ion velocity and magnetic field distributions near the ICB. (A) The center-of-mass velocity of heavy ions in the XZMSE plane, averaged over −1 RM < YMSE < 1 RM. (B) Proton velocity. (C) Velocity shear between protons and heavy ions. (D) Magnetic field strength. (E) Angle between the magnetic field and the X�⃗ MSEin the YZMSE plane, averaged over −1.5 RM < XMSE < 0.5 RM. Black arrows in (A) to (C) indicate velocity directions. Black curves in (A) to (D) mark the nominal locations of the bow shock and ICB. The black shaded sphere in (E) denotes the planetary shadow. -- [physics.space-ph]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/08/Simultaneous.png?resize=1200%2C720&ssl=1)
[physics.space-ph] Atmospheric ion escape driven by the solar wind is a key process controlling the long-term loss of the Martian atmosphere. Localized plasma clouds can carry substantial fluxes of planetary […]
Space Weather & Heliophysics
Posted inImaging & Spectroscopy
Proba-3 Views Its Coronagraph – And Our Home World
[ESA]. At first glance, this is just another image of Earth. But look closely, and you will be able to make out Proba-3’s Coronagraph spacecraft hiding in plain sight, covering […]
![Stellar influence on planetary habitability. Figure credit: solar images from NASA/ESA and KPNO/NSO/AURA/NSF, background pictures generated through OpenAI’s image-generation system (i.e., Adobe Firefly and ChatGPT Images 2.0). Illustration: K. Herbst - [astro-ph.EP]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/08/StellarActivity.jpg?resize=1200%2C720&ssl=1)
Posted inHabitable Zones
Stellar Activity, Exoplanet, Habitability, Planetary Atmospheres
[astro-ph.EP] This chapter will review the deep connection of planetary habitability and stellar irradiation. We present the long-term stellar evolution as one of the drivers of atmospheric escape and climate […]
Posted inMars
First Study Hints Solar Storms May Alter The Weather During Martian Dust Storms
[Royal Astronomical Society] Solar storms may affect weather on Mars when they strike at the same time as major Martian dust storms, a new study has suggested for the first […]
![Elemental [X/Fe] abundances derived in this work as a function of stellar age. The solid orange lines show the best-fit linear age–abundance relations derived in this work, and the dotted grey lines show the corresponding relations from M. Bedell et al. (2018) for comparison. -- [astro-ph.SR]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/07/The-Sun.png?resize=1200%2C718&ssl=1)
Posted inStellar Cartography
The Sun’s Chemical Peculiarity: Disentangling Galactic Chemical Evolution And Planetary Engulfment In Solar Twins
[astro-ph.SR] Recent observational studies have suggested that the Sun may be chemically peculiar relative to the majority of solar twins.
![[NSF/AURA] This newly released image from the National Science Foundation (NSF) was taken by the Daniel K. Inouye Solar Telescope is the largest solar telescope in the world.](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/07/Our-Local-Star.png?resize=1200%2C721&ssl=1)
Posted inSpace Weather & Heliophysics
Our Local Star
[NSF/AURA] This newly released image from the National Science Foundation (NSF) was taken by the Daniel K. Inouye Solar Telescope is the largest solar telescope in the world. This view […]
Posted inInterstellar
New Horizons Extends Key Observations Of Interstellar Material Slowing The Solar Wind
[SwRI] A new Southwest Research Institute (SwRI) study based on data from NASA’s New Horizons spacecraft has uncovered fascinating insights into why the solar wind gradually slows as it moves […]
Posted inAstronomy & Telescopes, Exoplanets, -moons, -comets, Habitable Zones, Magnetic Fields, Electromagnetism, bioelectricity,, Space Weather & Heliophysics, Status Report, Stellar Cartography
Summary Of The First Year Of The Space Weather Around Young Suns Program: 900 Hours Of Low-frequency Radio And Optical Data Dedicated To Young, Solar-type Stars
The Space Weather Around Young Suns (SWAYS) program was introduced in Davis2025 as a multi-wavelength monitoring program for studying the activity and particle environments of nearby, young, solar-type stars.
Posted inAtmospheres, Climate, Weather, Magnetic Fields, Electromagnetism, bioelectricity,, Mars, Press Release, Radiation, Space Weather & Heliophysics
A Surprising Phenomenon Found In NASA Data From Mars
Data beamed back from Mars by the NASA spacecraft MAVEN provides the first evidence that a phenomenon protecting planets from solar winds can occur in the atmospheres of worlds that […]
Posted inAstronomy & Telescopes, Exoplanets, -moons, -comets, Gaia - Planetary Perspectives, Habitable Zones, Radiation, Space Weather & Heliophysics, Status Report
Exploring Space Weather From Young Solar-like Stars as Windows to Exoplanetary Habitability
Young solar-like stars are efficient generators of magnetic activity, superflares, coronal mass ejections (CMEs), and stellar energetic particles. These phenomena drive the early evolution of stars and shape the habitability […]