[physics.gen-ph] Natural panspermia is a transport-and-establishment hypothesis, not a theory of abiogenesis. The Earth-specific question is whether any nonterrestrial donor remains competitive with terrestrial origin once launch, planetary-system escape, transit, […]
Panspermia
Posted inVenus
A Panspermia Origin For Venus Cloud Life
[USRA] Panspermia is the idea that life can originate on one planetary body and then be transferred to other bodies. Impacts are often the suggested method for transfer, as they […]
Posted inNanotechnology & SynBio
Ecological Constraints To Mirror Life
[bioRxiv] Our biosphere exhibits remarkable diversity yet is constrained by universal organizational principles, including molecular homochirality.
Posted inOrigin & Evolution of Life
The Biological Cosmological Constant ΛB: Exploratory Propensity, Dynamical Habitability And The Geometric Origin Of Life
[BioSystems via PubMed] The emergence of life represents a fundamental geometric phase transition in the state space of complex systems, rather than a mere sequence of chemical syntheses. Building upon […]
Posted inTerraforming & Geoengineering
Conceptual Thermal Constraints On The Growth Of The First Tree On A Terraformed Mars
The environmental conditions on present‑day Mars are far outside the range tolerated by known complex terrestrial life.
Posted inEuropa, Meteorites & Asteroids, Origin & Evolution of Life, Panspermia, Planetary Protection & Biosafety, Status Report, Water/Hycean Worlds & Oceanography
Earth As A Potential Source Of Llife For Europa’s Subsurface Ocean
The paper discusses the possibility of dust particles containing living bacteria ejected from Earth reaching Europa and landing on its surface.
Posted inAstrogeology, Atmospheres, Climate, Weather, Biochemistry & Organic Chemistry, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Mars, Meteorites & Asteroids, Origin & Evolution of Life, Panspermia, Sample Return, Status Report
Mars Organic Geochemistry-Are We Alone, and Where Did We Come From?
This review of martian organic geochemistry aims to contextualize recent findings of organic molecules in martian meteorites and from Mars missions within the broader study of origins of life on […]
Posted inAway Teams & Field Reports, Biophysics, Biosignatures & Paleobiology, Genomics, Proteomics, Bioinformatics, Microbiology & Virology, Origin & Evolution of Life, Panspermia, Press Release, Sample Return, Space Life Science, Tricorders & Sensors
Planetary Genomics: Basecamp Research Launches The Trillion Gene Atlas
Editor’s note: If we aspire to mount expeditions to new worlds and then embrace the task of characterizing and quantifying whatever life forms we find, the ability to map and […]
Posted inAtmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Impact events, Origin & Evolution of Life, Panspermia, Press Release
Impact History Of Early Earth Created Conditions Conducive To Life
Southwest Research Institute scientists modeled the early impact history of Earth, seeking insight into potential origins of life. These models show that asteroid impacts on the early Earth plowed up […]
Posted inBiosignatures & Paleobiology, Exploration Gear & Tech, Genomics, Proteomics, Bioinformatics, Habitable Zones, Microbiology & Virology, Missions & Hardware, Panspermia, Planetary Protection & Biosafety, Status Report
Biocidal Conditions in Low-Mars-Orbit Can Inactivate Bioburden on External Mars Spacecraft Surfaces and Dust Particles Within a Few Sols
Mars Sample Return Program planning includes a series of spacecraft staged both on the Martian surface and in low-Mars-orbit (LMO).