Panspermia is the hypothesis that life originated on Earth from the bombardment of foreign interstellar ejecta harboring polyextremophile microorganisms.
panspermia
Posted inAstrochemistry, Extremeophiles and Extreme Environments, Interstellar, Microbiology & Virology, Panspermia, Press Release
Possibilities For Methanogenic And Acetogenic Life In A Molecular Cloud
There are life forms in space and the ancestor of Earth life came from interstellar space according to models like panspermia.
Posted inAstrochemistry, Astrogeology, Extremeophiles and Extreme Environments, Fossils & Paleontology, Meteorites & Asteroids, Microbiology & Virology, Panspermia, Radiation, Space Weather & Heliophysics, Status Report
Protective Effects of Halite to Vacuum and Vacuum-Ultraviolet Radiation: A Potential Scenario During a Young Sun Superflare
Halite (NaCl mineral) has exhibited the potential to preserve microorganisms for millions of years on Earth. This mineral was also identified on Mars and in meteorites.
Posted inAstrochemistry, Astrogeology, Atmospheres, Climate, Weather, Meteorites & Asteroids, Panspermia, Status Report
Polarized Microwave Emission From Space Particles In The Upper Atmosphere Of The Earth
Tons of space particles enter the Earth atmosphere every year, being detected when they produce fireballs, meteor showers, or when they impact the Earth surface.
Posted inAstrochemistry, Astrogeology, Astronomy & Telescopes, Comets and Asteroids, Interstellar, Meteorites & Asteroids, Panspermia, Press Release, Space Weather & Heliophysics
X-rays May Tell Us More About The Origins Of Visiting Space Rocks
A research team led by a Yale astronomer has some advice for our next close encounter with a wandering, interstellar object. Check its X-rays on the way out. Since 2017, […]
Posted inAstrochemistry, Astrogeology, Impact events, Interstellar, Meteorites & Asteroids, Panspermia, Press Release
Searching For Life With Space Dust
Following enormous collisions, such as asteroid impacts, some amount of material from an impacted world may be ejected into space.
Posted inAstrogeology, Biochemistry & Organic Chemistry, Icy Worlds, Impact events, Meteorites & Asteroids, Panspermia, Status Report
New Signatures of Bio-Molecular Complexity in the Hypervelocity Impact Ejecta of Icy Moon Analogues
Impact delivery of prebiotic compounds to the early Earth from an impacting comet is considered to be one of the possible ways by which prebiotic molecules arrived on the Earth.
Posted inAstrochemistry, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Panspermia, Press Release
Solid Grains Ejected From Terrestrial Exoplanets As A Probe Of The Abundance Of life In the Milky Way
Searching for extrasolar biosignatures is important to understand life on Earth and its origin.
Posted inPanspermia
Transfer Of Rocks Between Planetary Systems: Panspermia Revisited
Motivated by the recent discovery of interstellar objects passing through the solar system, and by recent developments in dynamical simulations, this paper reconsiders the likelihood for life bearing rocks to […]
Posted inPanspermia
On Possible Life-dispersal Patterns Beyond The Earth
We model hypothetical bio-dispersal within a single Galactic region using the stochastic infection dynamics process, which is inspired by these local properties of life dispersal on Earth. We split the […]