Results 71 to 80 of about 3,089 (177)

Erratum: Correlation network analysis for amino acid identification in soil samples with the ORIGIN space-prototype instrument

Frontiers in Astronomy and Space Sciences, 2023
Frontiers Production Office
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Taphonomy of biosignatures in carbonate nodules from the Mars-analog Qaidam Basin: constraints from microscopic, spectroscopic, and geochemical analyses

Frontiers in Astronomy and Space Sciences
Early diagenetic nodules with low permeable and weather-resistant structures are considered to be favorable for biosignature preservation. Numerous nodular structures forming in neutral-to-alkaline and saline diagenetic fluids were previously identified ...
Yan Chen, Zongjun Yin, Wei Lin
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Evaluating Biogenicity on the Geological Record With Synchrotron-Based Techniques

Frontiers in Microbiology, 2019
The biogenicity problem of geological materials is one of the most challenging ones in the field of paleo and astrobiology. As one goes deeper in time, the traces of life become feeble and ambiguous, blending with the surrounding geology.
Flavia Callefo, Lara Maldanis, Lara Maldanis, Verônica C. Teixeira, Rodrigo Adrián de Oliveira Abans, Rodrigo Adrián de Oliveira Abans, Thiago Monfredini, Fabio Rodrigues, Douglas Galante   +8 more
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Extreme Forward Scattering Observed in Disk-averaged Near-infrared Phase Curves of Titan

The Planetary Science Journal
Titan, with its thick and hazy atmosphere, is a key world in our solar system for understanding light scattering processes. NASA’s Cassini mission monitored Titan between 2004 and 2017, where the derived data set includes a large number of whole disk ...
Chase Cooper, Tyler D. Robinson, Jason W. Barnes, L. C. Mayorga, Lily Robinthal   +4 more
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Exploring Life Detection on Mars: Understanding Challenges in DNA Amplification in Martian Regolith Analogue After Fe Ion Irradiation

Life
The search for life beyond Earth currently hinges on the detection of biosignatures that are indicative of current or past life, with terrestrial life being the sole known example.
Alessia Cassaro, Claudia Pacelli, Silvano Onofri   +2 more
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An exploration of origin of life for exoplanetary science

Frontiers in Astronomy and Space Sciences
The factors that enable life to begin define the difference between an inhabited planet and one that is simply habitable. While used extensively in Origins, Worlds, and Life: A Decadal Strategy for Planetary Science and Astrobiology 2023–2032 ...
Finnegan Keller, Tiffany Kataria, Laura M. Barge, Pin Chen, Yuk Yung, Jessica M. Weber   +5 more
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Editorial: Presentations at the 4th Workshop of the German Astrobiological Society (DAbG) on Astrobiology, 26–27 September 2019, Vienna, Austria

Frontiers in Astronomy and Space Sciences, 2021
Tetyana Milojevic, Rosa De La Torre Noetzel, Oliver Strbak, Dirk Schulze-Makuch, Dirk Schulze-Makuch, Dirk Schulze-Makuch   +5 more
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Tracking the record of early life

Carnets de Géologie, 2005
Life may have been present on Earth from about 3.8 Ga or earlier. Based on a combination of geochemical, morphological and sedimentological evidence, the early biosphere included a wide diversity of prokaryotes exhibiting modern metabolisms that thrived ...
Marshall Craig P., Javaux Emmanuelle J.
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Editorial: Terrestrial analogues of extraterrestrial environments: Assessing habitability and biosignatures preservation

Frontiers in Astronomy and Space Sciences, 2022
Jonathan Clarke, Margarita Safonova, Chandra Sivaram, Siddharth Pandey, Jennifer G. Blank   +4 more
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Editorial: Head & Neck Cancer and Esophageal Cancer: From Biosignatures to Therapeutics

Frontiers in Oncology, 2021
Victor C. Kok, Victor C. Kok, Cheng-Chia Yu, Cheng-Chia Yu, Jorge A.R. Salvador   +4 more
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