2+ week, 5+ day ago   (621+ words) That includes moons of Saturn and Jupiter as well as asteroids. By recreating key parts of these environments in the laboratory, Klenner’s team can investigate how minerals and salts interact, how materials freeze and melt, and how potential signs of…...

2+ week, 5+ day ago   (205+ words) [astro-ph.EP] We investigate how tidal locking affects the planetary dynamo and the magnetospheres of Earth-like planets orbiting the habitable zones of M dwarfs. We couple an empirical stellar wind model with two distinct planetary dynamo paradigms, direct rotational scaling…...

2+ week, 5+ day ago   (143+ words) Gullies At The Start Of Martian Spring Astrobiology Web HiRISE regularly takes repeat images of gullies to look for changes. This site is one of the most frequent monitoring sites, with more than 70 images to date. It is imaged frequently…...

2+ week, 5+ day ago   (270+ words) As an ExoGuide, we ask that you participate in a single, 2-hour meeting with the cohort (~30-minute seminar and ~90-min informal discussion) that speaks to your experiences as a scientist or engineer. The ExoExplorer organizers are eager to showcase broad,…...

2+ week, 5+ day ago   (136+ words) [astro-ph.EP] Given their abundance and observational advantages, M stars will arguably be the best candidates for characterizing and searching for biosignatures on terrestrial exoplanets in the near future. Here, we simulate Pre-Industrial Earth-like and Archean Earth-like atmospheres around M4 and…...

1+ mon, 1+ week ago   (245+ words) Astrobiology Web [q-bio.PE] Hash Chemistry is a family of minimalistic evolutionary models in which a deterministic hash function assigns a scalar score to entities of arbitrary size, opening a combinatorially vast possibility space (a “cardinality leap). Since its introduction,…...

1+ mon, 1+ week ago   (106+ words) Astrobiology Web [NASA] Preflight image of Syto9 staining of Staphylococcus aureus biofilm as part of ODYSSEY, an investigation that evaluates biofilm formation and exchange of genetic material among two species of bacteria in spaceflight and in simulated microgravity chambers on the…...

1+ mon, 2+ week ago   (197+ words) [Microorganisms]. Over the course of Martian history, the presence of atmospheric carbon dioxide and potential subsurface molecular hydrogen (H2), in addition to potential surface and subsurface liquid water, suggests that the Martian subsurface, at minimum, may once have been habitable, particularly…...

1+ mon, 1+ week ago   (212+ words) [astro-ph.GA] The thermal state of interstellar gas controls whether it remains warm and diffuse or cools into dense clouds. Twentyone centimetre observations have established a statistical picture of neutral-gas phases, but their three-dimensional architecture has not previously been mapped....

1+ mon, 2+ week ago   (220+ words) Astrobiology Web [astro-ph.EP] Static retrieval frameworks are leading tools for interpreting exoplanet observations, yet time-independent modelling leaves them prone to degeneracy and unable to resolve exoplanets’ histories. The compositions and structures of surveyed super-Earth and sub-Neptune sub-populations remain unclear,…...