The evolution of the orbits of bodies ejected from the Earth, Moon, Mercury and Mars was studied. At ejection velocities about 12-14 km/s, the fraction of bodies ejected from the […]
Panspermia
Posted inGaia - Planetary Perspectives, Habitable Zones, Intelligence & Language, Origin & Evolution of Life, Panspermia, SETI & Technosignatures, Status Report
Percolation Of ‘Civilisation’ In A Homogeneous Isotropic Universe
In this work, we consider the spread of a ‘civilisation’ in an idealised homogeneous isotropic universe where all the planets of interest are habitable.
Posted inAstrobiology (general), Astrochemistry, Astrogeology, Biosignatures & Paleobiology, Education and Outreach, Habitable Zones, Icy Worlds, NASA Astrobiology Program, Origin & Evolution of Life, Panspermia, Reports, Roadmaps, & Plans, Status Report, Water/Hycean Worlds & Oceanography
The Astrobiology Primer v2.0
Astrobiology is the science that seeks to understand the story of life in our universe.
Posted inBiochemistry & Organic Chemistry, Biophysics, Biosignatures & Paleobiology, Genomics, Proteomics, Bioinformatics, Microbiology & Virology, Panspermia, Planetary Protection & Biosafety, Press Release, Sample Return
Mirror Bacteria Report: Call For A Global Discussion About Possible Risks
Editor’s note: As we study how Earth life is put together it is helpful to understand alternate ways that chemistry could combine to form living systems. One way is to […]
Posted inComets and Asteroids, Panspermia, Status Report
He Awa Whiria: The Tidal Streams of Interstellar Objects
Upcoming surveys are likely to discover a new sample of interstellar objects (ISOs) within the Solar System, but questions remain about the origin and distribution of this population within the […]
Posted inAstrogeology, Biosignatures & Paleobiology, Impact events, Meteorites & Asteroids, Microbiology & Virology, Panspermia, Planetary Protection & Biosafety, Press Release
Rapid Colonization of a Space‐returned Ryugu Sample by Terrestrial Microorganisms
The presence of microorganisms within meteorites has been used as evidence for extraterrestrial life, however, the potential for terrestrial contamination makes their interpretation highly controversial.
Posted inAway Teams & Field Reports, Biosignatures & Paleobiology, Conferences and Meetings, Exploration Gear & Tech, Genomics, Proteomics, Bioinformatics, Life Support Systems, Mars, Missions & Hardware, Panspermia, Planetary Protection & Biosafety, Reports, Roadmaps, & Plans, Sample Return, Space Life Science, Space Physiology & Medicine, Status Report
Planetary Protection Metagenomics in Spaceflight Workshop
The Planetary Protection Metagenomics in Spaceflight Workshop is scheduled for November 19-22, 2024, at NASA Ames in Mountain View, California.
Posted inCryobiology, Extinction events, Gaia - Planetary Perspectives, Genomics, Proteomics, Bioinformatics, Habitable Zones, Life Support Systems, Panspermia, Planetary Protection & Biosafety, Sample Return, Societal Issues, Status Report, Terraforming & Geoengineering
Safeguarding Earth’s Biodiversity By Creating A Lunar Biorepository
Earth’s biodiversity is increasingly threatened and at risk. We propose a passive lunar biorepository for long-term storage of prioritized taxa of live cryopreserved samples to safeguard Earth’s biodiversity and to […]
Posted inCryobiology, Extremeophiles and Extreme Environments, Genomics, Proteomics, Bioinformatics, Habitable Zones, Icy Worlds, Microbiology & Virology, Microgravity, Panspermia, Planetary Protection & Biosafety, Radiation, Status Report
Antioxidant Defense in the Toughest Animals on the Earth: Its Contribution to the Extreme Resistance of Tardigrades
Tardigrades are unique among animals in their resistance to dehydration, mainly due to anhydrobiosis and tun formation. They are also very resistant to high-energy radiation, low and high temperatures, low […]
Posted inGenomics, Proteomics, Bioinformatics, Habitable Zones, Microbiology & Virology, Nanotechnology & SynBio, Panspermia, Planetary Protection & Biosafety, Radiation, Status Report
Insights Into The Synthesis, Engineering, And Functions Of Microbial Pigments In Deinococcus Bacteria
The ability of Deinococcus bacteria to survive in harsh environments, such as high radiation, extreme temperature, and dryness, is mainly attributed to the generation of unique pigments, especially carotenoids.