Background The extraordinarily resistant bacterium Deinococcus radiodurans withstands harsh environmental conditions present in outer space. Deinococcus radiodurans was exposed for 1 year outside the International Space Station within Tanpopo orbital […]
Panspermia
Posted inAstrochemistry, Astrogeology, Biosignatures & Paleobiology, Interstellar, Panspermia, Status Report
The Possibility Of Panspermia In The Deep Cosmos By Means Of The Planetary Dust Grains
By obtaining the assumption that planetary dust particles can escape from the gravitational attraction of a planet, we consider the possibility for the dust grains to leave the star’s system […]
![AlphaFold structures of NLS-containing proteins. AlphaFold2 structures modeled from NLS-predicted proteins that had no SwissProt BLASTP hits (E-value < 1e-15). [AB] Structures for those that had a FoldSeek hit against the AlphaFold2 SwissProt database (E-value < 1E-05). The yellow and blue structures indicate the reference and the predicted H. exemplaris protein structures, respectively. [A] BV898_05254.p01 (5-hydroxytryptamine receptor 1E (AF-Q6VB83-F1-model_v4.pdb E-value = 6.22E-12, RMSD between 163 pruned atom pairs is 1.124 angstroms across all 353 pairs: 10.861) [B] Ecdysone-induced protein 78C (AF-P45447-F1-model_v4 E26 value 4.48E-08, RMSD between 84 pruned atom pairs is 1.044 angstroms; across all 391 pairs: 32.283) [C-F] Transcripts that had an IUPRED3 score of 1.0 [C] BV898_03773.p01, [D] BV898_07132.p01 [E] BV898_12866.p01 [F] BV898_18010.p01. -- biorxiv.org](https://i0.wp.com/astrobiology.com/wp-content/uploads/2024/02/Transcriptome-analysis-1.png?resize=1200%2C717&ssl=1)
Posted inBiophysics, Cryobiology, Extremeophiles and Extreme Environments, Genomics, Proteomics, Bioinformatics, Microbiology & Virology, Panspermia, Radiation, Status Report, Tardigrades
Transcriptome Analysis Of The Tardigrade Hypsibius Exemplaris Exposed To The DNA-damaging Agent Bleomycin
Tardigrades are microscopic animals that are renowned for their capabilities of tolerating near-complete desiccation by entering an ametabolic state called anhydrobiosis.
Posted inExtremeophiles and Extreme Environments, Genomics, Proteomics, Bioinformatics, Microbiology & Virology, Missions & Hardware, Origin & Evolution of Life, Panspermia, Planetary Protection & Biosafety, Radiation, Space Stations, Status Report
DNA Damage And Survival Time Course Of Deinococcal Cell Pellets During 3 Years Of Exposure To Outer Space
The hypothesis called “panspermia” proposes an interplanetary transfer of life. Experiments have exposed extremophilic organisms to outer space to test microbe survivability and the panspermia hypothesis. Microbes inside shielding material […]
Posted inAstrochemistry, Astronomy & Telescopes, Biochemistry & Organic Chemistry, Biophysics, Biosignatures & Paleobiology, Genomics, Proteomics, Bioinformatics, Habitable Zones, Interstellar, Meteorites & Asteroids, Origin & Evolution of Life, Panspermia, Press Release
Studying Life’s Origins By Simulating a Cosmic Evolution
Amino acids make up millions of proteins that drive the chemical gears of life, including essential bodily functions in animals. Because of amino acids’ relationship to living things scientists are […]
Posted inExtremeophiles and Extreme Environments, Genomics, Proteomics, Bioinformatics, Microbiology & Virology, Microgravity, Origin & Evolution of Life, Panspermia, Radiation, Space Life Science, Space Stations, Status Report
Tanpopo Exposure Units For External ISS Studies Of Extremophiles In Space
Seven Tanpopo exposure units with different samples are placed inside the exposure panel. The Tanpopo-5 investigation studies the origin, transportation, and survival of life in space.
Posted inAstrogeology, Astronomy & Telescopes, Biosignatures & Paleobiology, Comets and Asteroids, Interstellar, Origin & Evolution of Life, Panspermia, Planetary Protection & Biosafety, Status Report
The Implications Of ‘Oumuamua On Panspermia
Panspermia is the hypothesis that life originated on Earth from the bombardment of foreign interstellar ejecta harboring polyextremophile microorganisms.
Posted inBiosignatures & Paleobiology, Exploration Gear & Tech, Genomics, Proteomics, Bioinformatics, Life Support Systems, Microbiology & Virology, Nanotechnology & SynBio, Panspermia, Planetary Protection & Biosafety, Space Life Science, Status Report, Tricorders & Sensors
Tricorder Tech: Air Monitoring By Nanopore Sequencing
Editor’s note: Upon entering a spacecraft or arriving on a new, inhabited world, you would probably like to have your tricorder to have the ability to do a quick assay […]
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, Biochemistry & Organic Chemistry, Biosignatures & Paleobiology, Genomics, Proteomics, Bioinformatics, Meteorites & Asteroids, Origin & Evolution of Life, Panspermia, Status Report
Prebiotic Syntheses of Organophosphorus Compounds from Reduced Source of Phosphorus in Non-Aqueous Solvents
Reduced-oxidation-state phosphorus (reduced P, hereafter) compounds were likely available on the early Earth via meteorites or through various geologic processes.