[Chinese Academy of Sciences] Forests are central to climate mitigation, yet tracking how fast they grow over decades remains difficult.
Biosignatures
![Kiel diagram for 290 stars with 5000 K ≤ Teff ≤ 6500 K and log g ≥ 4.0 dex analyzed in this work. The dashed black lines present the solar values obtained for the Ceres 2009-02-08 solar spectrum, Teff = 5759±18 K, log g = 4.43±0.05 dex and [Fe/H] = 0.00±0.01 dex. -- astro-ph.EP](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/07/Chemical-Abundances.png?resize=1200%2C720&ssl=1)
Posted inAstrochemistry
Chemical Abundances of the Bioessential Elements C, O and S, and the Refractory Elements
[astro-ph.EP] We determined atmospheric and evolutionary parameters, along with chemical abundances of C, O, S, Fe, and Ni for 290 solar-type exoplanet hosting stars using high-resolution HARPS-North and HARPS-South spectra, […]
Posted inMars
Sulfates Or Other Hydrated Materials East Of Aram Chaos?
[NASA] Aram Chaos is of particular scientific interest because it is hypothesized that its chaotic terrain may be the source of water that contributed to the creation of nearby valleys […]
Posted inMars
Curiosity Rover Takes a Close Look at Martian Sulfur Crystals
[NASA] These sulfur crystals were found inside a rock after NASA’s Curiosity Mars rover happened to drive over it and crush it on May 30, 2024, the 4,200th Martian day, […]
Posted inMars
ExoMars Rosalind Franklin Astrobiology Mission Heat Shield Enters Integration Phase
[ArianeGroup] Following a successful vibration test campaign designed to validate its mechanical resistance to the stresses of launch and the journey to Mars, the Front Shield for Rosalind Franklin has […]
Posted inAstrochemistry
Theoretical and Experimental IR Spectra of Astronomical PAHs and PANHs in the 2000–1650 cm–1 Range (∼5–6 μm)
[ACS Earth and Space Chemistry] Recent James Webb Space Telescope observations reveal unprecedented details in the 2000–1650 cm–1 (∼5–6 μm) region, including the well-known 5.25 and 5.75 μm bands.
Posted inHabitable Zones
Nautilus: Fast Time-Resolved Spectroscopy of GKM Stellar Flares and Their Implications for Planetary Habitability
[astro-ph.SR] Low-mass GKM dwarfs are prime targets for finding habitable-zone Earth-sized planets, but their frequent flares, especially on M~dwarfs, can strongly affect planetary atmospheres through enhanced UV/XUV radiation and stellar […]
Posted inSETI & Technosignatures
Searching For Extraterrestrial Intelligence With The SKA
[astro-ph.IM] The search for technosignatures (also known as the Search for Extraterrestrial Intelligence or SETI) depends critically on our ability to distinguish artificial signals from the rich complexity of natural […]
Posted inMars
Fifty Years after Viking: The Promise of Solar System Microbiology and Microbial Ecology
[Astrobiology via PubMed] The ambiguity of the Viking lander life-detection experiments left microbiology and microbial ecology out of space missions for 50 years. However, this was largely because the scientific […]
Posted inUncategorized
Perseverance Astrobiology Droid Has Completed A Martian Marathon
[NASA] On June 14, 2026, Mars Perseverance rover completed a Martian “marathon” by surpassing 26.2 miles (42.195 kilometers) of travel. The day before, NASA’s Mars Reconnaissance Orbiter snapped this view […]