Tardigrades are small metazoans renowned for their exceptional tolerance against various harsh environments in a dehydrated state. Some species exhibited an extraordinary tolerance against high-dose irradiation even in a hydrated […]
Radiation
Posted inAnalog Studies, Arctic / Antarctic / Alpine, Atmospheres, Climate, Weather, Cryobiology, Desert Worlds, Extremeophiles and Extreme Environments, Gravitational Biology, Life Support Systems, Mars, Plant Biology, Radiation, Space Agriculture, Status Report, Terraforming & Geoengineering
The Extremotolerant Desert Moss Syntrichia caninervis Is A Promising Pioneer Plant For Colonizing Extraterrestrial Environments
Many plans to establish human settlements on other planets focus on adapting crops to growth in controlled environments. However, these settlements will also require pioneer plants that can grow in […]
Posted inCryobiology, Extremeophiles and Extreme Environments, Genomics, Proteomics, Bioinformatics, Microbiology & Virology, Nanotechnology & SynBio, Press Release, Radiation, Tardigrades
Modifying Genomes Of Tardigrades To Unravel Their Secrets
Some species of tardigrades are highly and unusually resilient to various extreme conditions fatal to most other forms of life.
Posted inAI - Data - Apps - Cybernetics, Analog Studies, Astronauts and Explorers, Away Teams & Field Reports, Genomics, Proteomics, Bioinformatics, Microgravity, Radiation, Space Life Science, Space Physiology & Medicine, Space Stations, Status Report
NASA GeneLab Data: Inspiration4 Mission: Commercial Astronaut Data Now Available At NASA Open Science Data Repository OSDR
NASA GeneLab: The increased accessibility of commercial and private spaceflight travel has made it imperative to understand the short- and long-term effects of space stressors on human health.
Posted inBiophysics, Biosignatures & Paleobiology, Cryobiology, Extremeophiles and Extreme Environments, Genomics, Proteomics, Bioinformatics, Nanotechnology & SynBio, Panspermia, Radiation, Tardigrades
A Comparative Ultrastructure Study of the Tardigrade Ramazzottius varieornatus In The Hydrated State, After Desiccation and During the Process of Rehydration
Tardigrades can survive hostile environments such as desiccation by adopting a state of anhydrobiosis. Numerous tardigrade species have been described thus far, and recent genome and transcriptome analyses revealed that […]
Posted inAtmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Biophysics, Exoplanets, -moons, -comets, Habitable Zones, Magnetic Fields, Electromagnetism, bioelectricity,, Proxima Centauri, Radiation, Space Weather & Heliophysics, Status Report
MHD Simulations of the Space Weather in Proxima b: Habitability Conditions and Radio Emission
The habitability of exoplanets hosted by M-dwarf stars dramatically depends on their space weather. We present 3D magneto-hydrodynamic simulations to characterise the magneto-plasma environment and thus the habitability of the […]
Posted inBiochemistry & Organic Chemistry, Biosignatures & Paleobiology, Habitable Zones, Plant Biology, Radiation, Status Report
UV Photo-degradation of the Secondary Lichen Substance Parietin: A Multi-spectroscopic Analysis in Astrobiology Perspective
The cortical anthraquinone yellow-orange pigment parietin is a secondary lichen substance providing UV-shielding properties that is produced by several lichen species. In our work, the secondary metabolite has been extracted […]
Posted inHabitable Zones, Radiation, Space Weather & Heliophysics, Status Report, Stellar Cartography
Stellar Chromospheric Activity Database of Solar-like Stars Based on the LAMOST Low-Resolution Spectroscopic Survey: II. the bolometric and photospheric calibration
The dependence of stellar magnetic activity on stellar parameters would be inspired by the chromospheric activity studies based on the large-scale spectroscopic surveys.
Posted inBiogeochemical Cycles & Geobiology, Callisto, Europa, Ganymede, Icy Worlds, Imaging & Spectroscopy, Io, Jupiter, Radiation, Status Report
Energy And Temperature Dependencies For Electron-induced Sputtering From H2O-ice: Implications For The Icy Galilean Moons
To better assess the role that electrons play in exosphere production on icy-rich bodies, we measured the total and O2 sputtering yields from H2O-ice for electrons with energies between 0.75 […]
![Comparison of flare rates from young planet host stars with respect to a comparable sample with respect to age [Myr] and Teff [K]. Circles represent the flare rate of the host star (name along the x-axis); vertical bars represent the lower 16th and upper 84th percentiles for the comparable sample. The majority of young planet host stars have comparable flare rates to the lower end of the comparison sample. A handful of hosts have more flares, including HIP 67522, AU Mic, DS Tuc A, and TOI 451. We find no correlation with spectral type or age which may indicate why these host stars are relatively flare quiet. The measured flare rates are presented in Table 2. -- astro-ph.SR](https://i0.wp.com/astrobiology.com/wp-content/uploads/2024/05/Evolution-of-Flare-Activity-in.png?resize=1200%2C716&ssl=1)
Posted inAstronomy & Telescopes, Atmospheres, Climate, Weather, Exoplanets, -moons, -comets, Habitable Zones, Imaging & Spectroscopy, Radiation, Space Weather & Heliophysics, Status Report, Stellar Cartography
Evolution of Flare Activity in GKM Stars Younger than 300 Myr over Five Years of TESS Observations
Stellar flares are short-duration (< hours) bursts of radiation associated with surface magnetic reconnection events. Stellar magnetic activity generally decreases as a function of both age and Rossby number, R0, […]