![Vertical profiles of temperature and volume mixing ratios for the species included in our atmospheric model, simulated for TRAPPIST-1 e. The profile behavior follows from the equations and assumptions described in Section 2.2. -- [astro-ph.EP]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/07/Biosignature-Detectability.png?resize=1200%2C720&ssl=1)
[astro-ph.EP] The search for life beyond the Solar System is at a turning point, transitioning from theoretical predictions to observations enabled by next-generation observatories.
biosignatue
Posted inAstronomy & Telescopes, Atmospheres, Climate, Weather, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Gaia - Planetary Perspectives, Habitable Zones, Imaging & Spectroscopy, Mars, Status Report
The Role Of The Hubble Space Telescope In Advancing Our Understanding Of Atmospheric Escape In Exoplanets
An important evolutionary pathway for planetary atmospheres is escape to space, which has been studied on Earth and Mars for several decades and more recently in exoplanets.
Posted inAstrogeology, Atmospheres, Climate, Weather, Biochemistry & Organic Chemistry, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Habitable Zones, Imaging & Spectroscopy, Status Report
Mineral False Positives in the Search for Exoplanet Surface Biosignatures
In the search for life in the cosmos, biopigments on exoplanet surfaces are a critical target.
Posted inBiochemistry & Organic Chemistry, Biogeochemical Cycles & Geobiology, Biophysics, Biosignatures & Paleobiology, Genomics, Proteomics, Bioinformatics, Nanotechnology & SynBio, Origin & Evolution of Life, Press Release
Shedding Light On How Hydrogen Cyanide Formed On Early Earth
Manganese dioxide can convert amino acids into hydrogen cyanide (HCN) without requiring methane, solving a long-standing puzzle about the origin of this key prebiotic molecule on early Earth, as reported […]
Posted inAway Teams & Field Reports, Biochemistry & Organic Chemistry, Biophysics, Biosignatures & Paleobiology, Exploration Gear & Tech, Genomics, Proteomics, Bioinformatics, Imaging & Spectroscopy, Missions & Hardware, Nanotechnology & SynBio, Sample Return, Status Report, Tricorders & Sensors
Tricorder Tech: DIYNAFLUOR: An Affordable DIY Plug-and-Play Nucleic Acid Fluorometer for eDNA Quantification in Resource Limited Settings
Editor’s note: with recent speculation about the potential habitability of other worlds and understanding the processes whereby other biospheres arise and evolve, thought needs to be given to developing sensor […]
Posted inAstrogeology, Atmospheres, Climate, Weather, Biochemistry & Organic Chemistry, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Desert Worlds, Imaging & Spectroscopy, Mars, Missions & Hardware, Robotics/Rovers/UAVs, Status Report
Mars Curiosity Blog, Sols 4852–4858: When Data Take Their Time…
Earth planning date: Friday, April 3, 2026 Written by Susanne P. Schwenzer, Professor of Planetary Mineralogy at The Open University, UK
Posted inAstrogeology, Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Caves, Craters, Mountains, Subsurface, Lava Tubes, Desert Worlds, Habitable Zones, Icy Worlds, Imaging & Spectroscopy, Mapping, Geodesy, Cartography, Bathymetry, Mars, Missions & Hardware, Press Release, Robotics/Rovers/UAVs, Sample Return, Tricorders & Sensors
Evidence Of Ancient Underground Water Reveals Mars May Have Stayed Habitable Longer Than Believed
Scientists from New York University Abu Dhabi (NYUAD) have uncovered new evidence that water once flowed beneath the surface of Mars, revealing that the planet may have remained habitable for […]
Posted inAstrochemistry, Astrogeology, Atmospheres, Climate, Weather, Biochemistry & Organic Chemistry, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Microbiology & Virology, Status Report, Venus
Terrestrial Dimethyl Sulfide: Template For Astrobiology
Dimethyl sulfide (DMS) is a volatile breakdown product of dimethyl-sulfonio-propionate (DMSP). DMS is synthesized by marine phytoplankton, plays a central role in Earth’s sulfur cycle and has growing relevance in […]
Posted inAstrochemistry, Astronomy & Telescopes, Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Imaging & Spectroscopy, SETI & Technosignatures, Status Report
Modern Earth-like Chemical Disequilibrium Biosignatures Are Challenging To Constrain Through Spectroscopic Retrievals
Robust exoplanet characterization studies are underway, and the community is looking ahead toward developing observational strategies to search for life beyond our solar system.
Posted inAstrochemistry, Astrogeology, Atmospheres, Climate, Weather, Biochemistry & Organic Chemistry, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Habitable Zones, Icy Worlds, Imaging & Spectroscopy, Missions & Hardware, Press Release, Robotics/Rovers/UAVs, Titan, Water/Hycean Worlds & Oceanography
Dragonfly Astrobiology Mission Passes Critical Design Review
NASA’s Dragonfly, the first rotorcraft designed for science exploration on another planet, has passed its Critical Design Review. The mission to Saturn’s icy moon Titan will investigate prebiotic chemical processes […]