Editor’s note: Many astrobiologists think that there is a chance that extant life could be found underneath the surface of Mars where conditions could be more favorable than they currently […]
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Posted inMars
Mars Perseverance Rover’s Panoramic View of Broom Point
[NASA] The bright-colored rocks exposed across the slope, running from middle left to middle right of the image, belong to a formation the science team calls the “Broom Point member,” […]
Posted inBarnard's Star
Planets Orbiting Barnard’s Star Seem To Be Small, Strange, And Utterly Uninhabitable
[University of Cambridge] Scientists have painted the most detailed portrait yet of the planetary system orbiting Barnard’s Star – the Sun’s closest neighbour after Alpha Centauri, just under six light-years […]
Posted inAstrochemistry
Experimental Astrochemistry And Machine Learning Unravel The Formation Of Oxygen-bearing Organic Molecules In Extraterrestrial Ices
[Nature Communications Chemistry] Oxygen-bearing organic molecules, including aldehydes, alcohols, and peroxides, serve as key precursors to complex organics in extraterrestrial environments. Their non-equilibrium formation mechanisms critically constrain the molecular complexity […]
Posted inMicrobiology & Virology
Bacteria Form Herds To Survive Predators, Offering Fresh Insight Into Earth’s Carbon Cycle
[Queen Mary University of London] Researchers at Queen Mary University of London have discovered that tiny photosynthetic bacteria band together into protective “herds” when attacked by predators – a survival […]
Posted inBeta Pictoris
Webb Discovers A Hidden Planet In The Beta Pictoris Star System
[NASA] Astronomers using NASA’s James Webb Space Telescope have discovered a giant planet outside our solar system, called an exoplanet, hiding within one of the most intensely studied planetary systems […]
Posted inBiochemistry & Organic Chemistry
Discovery: Oxygenic Photosynthesis Is Possible With Only One Photosystem
[Ludwig-Maximilians-Universität München] LMU researchers demonstrate that oxygenic photosynthesis can occur with only a single photosystem, overturning a fundamental principle of biology.
Posted inMars
Perseverance Rover Provides A Record of Ancient Mars Impacts
[NASA] Old rocks exposed on the rim of Jezero Crater preserve a roughly 4-billion-year-old cosmic “weather report” from the solar system’s most dynamic era.
![Averages over 100 trials of Siberian Traps injection scenario on a 31× 31 grid in the (fp, θ) parameter space. Mean number of DIC peaks (left), mean maximum DIC jump (top right), and mean time to return to equilibrium after end of injection phases (bottom right) are shown. The letters in the left panel correspond to parameters used in the example trials shown in Figure 10. -- [physics.ao-ph]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/07/Modeling-the-response.png?resize=1200%2C720&ssl=1)
Posted inAtmospheres, Climate, Weather
Modeling The Response Of Earth’s Marine Carbon Cycle To Extreme CO2 Injection Events
[physics.ao-ph] We explore how the response of a conceptual model of the marine carbon cycle depends on the way in which carbon is injected from the atmosphere.
![Time evolution of the probability distribution of the system for different temperatures as labeled and for fixed parameters: V=106 km3 , L=10 53 erg/s, r=0.01 AU, Grac=26.30 kJ/mol. The vertical axis is enantiomeric excess, and the horizontal axis is time in Myr scale. -- [astro-ph.HE]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/07/Supernova-Neutrinos.png?resize=1200%2C715&ssl=1)
Posted inAstrochemistry
Supernova Neutrinos And The Origin of Biomolecular Homochirality
[astro-ph.HE] We investigate the role of parity-violating interactions between supernova neutrinos and chiral molecules in nearby interstellar molecular clouds as a potential source of biomolecular homochirality.