With data from the Kepler (NASA), Gaia (ESA) and SOHO (NASA/ESA) satellites, a team, led by Instituto de Astrofísica e Ciências do Espaço (IA2) researcher ngela Santos, seems to have […]
Space Weather & Heliophysics
Posted inAstrogeology, Biogeochemical Cycles & Geobiology, Biophysics, Habitable Zones, Press Release, Space Weather & Heliophysics
Do Earth-like Exoplanets Have Magnetic Fields? Far-off Radio Signal Is Promising Sign
Earth’s magnetic field does more than keep everyone’s compass needles pointed in the same direction. It also helps preserve Earth’s sliver of life-sustaining atmosphere by deflecting high energy particles and […]
Posted inAtmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Exoplanets, -moons, -comets, Habitable Zones, Space Weather & Heliophysics, Status Report
Impact of Changing Stellar and Planetary Magnetic Fields on (Exo)planetary Environments and Atmospheric Mass Loss
The magnetic activity of a star — which modulates the stellar wind outflow — shapes the immediate environments of orbiting planets and induces atmospheric loss thereby impacting their habitability.
Posted inExoplanets, -moons, -comets, Habitable Zones, Space Weather & Heliophysics, Status Report
Characterisation Of Stellar Activity Of M dwarfs. I. Long-timescale variability In A Large Sample And Detection Of New Cycles
M dwarfs are active stars that exhibit variability in chromospheric emission and photometry at short and long timescales, including long cycles that are related to dynamo processes.
Posted inAtmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Exoplanets, -moons, -comets, Habitable Zones, Space Weather & Heliophysics, Status Report
Multiverse Predictions For Habitability: Stellar And Atmospheric Habitability
Stellar activity and planetary atmospheric properties have the potential to strongly influence habitability. To date, neither have been adequately studied in the multiverse context, so there has been no assessment […]
Posted inAstronomy & Telescopes, Cubesats and smallsats, Exoplanets, -moons, -comets, Habitable Zones, Imaging & Spectroscopy, Space Weather & Heliophysics, Status Report
Observing M Dwarfs UV and Optical Flares From A CubeSat And Their Implications For Exoplanets Habitability
M dwarfs show the highest rocky planet occurrence among all spectral types, in some instances within the Habitable Zone.
Posted inCallisto, Europa, Ganymede, Icy Worlds, Imaging & Spectroscopy, Space Weather & Heliophysics, Status Report
The Optical Aurorae of Europa, Ganymede and Callisto
The tenuous atmospheres of the Galilean satellites are sourced from their surfaces and produced by a combination of plasma-surface interactions and thermal processes. Though thin, these atmospheres can be studied […]
Posted inAtmospheres, Climate, Weather, Habitable Zones, Space Weather & Heliophysics, Status Report
Periodicities Of Solar Activity And Solar Radiation Derived From Observations And Their Links With The Terrestrial Environment
Solar magnetic activity is expressed via variations of sunspots and active regions varying on different timescales. The most accepted is an 11-year period supposedly induced by the electromagnetic solar dynamo […]
Posted inExoplanets, -moons, -comets, Habitable Zones, Press Release, Proxima Centauri, Space Weather & Heliophysics
Revisiting The Space Weather Environment Of Proxima Centauri b
Close-in planets orbiting around low-mass stars are exposed to intense energetic photon and particle radiation and harsh space weather.
Posted inAlpha Centauri, Exoplanets, -moons, -comets, Habitable Zones, Press Release, Proxima Centauri, Space Weather & Heliophysics, TRAPPIST-1
Stellar Space Weather Effects On Potentially Habitable Planets
Stellar activity can reveal itself in the form of radiation (eg, enhanced X-ray coronal emission, flares) and particles (eg, winds, coronal mass ejections). Together, these phenomena shape the space weather […]