[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 […]
heliophysics
![[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 inExoplanets, -moons, -comets
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
[astro-ph.EP] Hot Neptunes are close-in exoplanets that occupy a sparsely populated region of parameter space known as the “hot-Neptune desert”.
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 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 […]
Posted inAlpha Centauri, Astronomy & Telescopes, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Habitable Zones, Space Weather & Heliophysics, Status Report, Stellar Cartography
Near UV Stellar Activity and Brightness Fluctuations of the Alpha Centauri AB Star System from Weeks to Decades — Inputs for Reflected Light Spectroscopy with HWO
We present the most comprehensive near-ultraviolet (NUV: 2550-3255 Angstrom) activity record to date for the Alpha Centauri AB system, combining archival IUE and HST observations spanning nearly five decades with […]
Posted inAstronomy & Telescopes, Imaging & Spectroscopy, Space Weather & Heliophysics, Status Report, Stellar Cartography
Astrometric Exoplanet Detection Survives Solar-like Stellar Contamination
Astrometric monitoring of stars provides a promising method for discovery of low-mass planets around nearby Sun-like stars.
Posted inAstronomy & Telescopes, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report, Stellar Cartography
The HAges Catalog: Stellar Ages For High Priority HWO Target Stars
Precise stellar ages (uncertainties ≲1 Gyr, or ∼20% at solar age) are required to discern evolutionary trends in atmospheric biosignatures of terrestrial habitable zone exoplanets surveyed by the Habitable Worlds […]
Posted inAstronomy & Telescopes, Atmospheres, Climate, Weather, Exoplanets, -moons, -comets, Habitable Zones, Space Weather & Heliophysics, Status Report, TRAPPIST-1
A Single Power Law For The TRAPPIST-1 Flare Distribution Across Four Orders Of Magnitude In Energy
TRAPPIST-1 is an ultra-cool dwarf that flares frequently. These flares shape the surrounding planets’ high-energy irradiation environments, with consequences for atmospheric chemistry and escape, and they can contaminate transmission spectroscopy […]