675 citations
- Blue Marble Space Institute of ScienceUS53 papers
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12 papers · 1 filter
Galactic settlement of low-mass stars as a resolution to the Fermi paradox
Jacob Haqq-Misra, Thomas J. Fauchez
An expanding civilization could rapidly spread through the galaxy, so the absence of extraterrestrial settlement in the solar system implies that such expansionist civilizations do…
Evaluating the Plausible Range of N2O Biosignatures on Exo-Earths: An Integrated Biogeochemical, Photochemical, and Spectral Modeling Approach
Edward W. Schwieterman, Stephanie L. Olson, Daria Pidhorodetska +7
Nitrous oxide (N2O) -- a product of microbial nitrogen metabolism -- is a compelling exoplanet biosignature gas with distinctive spectral features in the near- and mid-infrared, an…
The Sparse Atmospheric MOdel Sampling Analysis (SAMOSA) intercomparison: Motivations and protocol version 1.0. A CUISINES model intercomparison project
Jacob Haqq-Misra, Eric T. Wolf, Thomas J. Fauchez +2
Planets in synchronous rotation around low-mass stars are the most salient targets for current ground- and space-based missions to observe and characterize. Such model calculations…
Alternative Methylated Biosignatures I: Methyl Bromide, A Capstone Biosignature
Michaela Leung, Edward W. Schwieterman, Mary N. Parenteau +1
The first potential exoplanet biosignature detections are likely to be ambiguous due to the potential for false positives: abiotic planetary processes that produce observables simi…
The origin of Earth's mantle nitrogen: primordial or early biogeochemical cycling?
H. Kurokawa, M. Laneuville, Y. Li +5
Earth's mantle nitrogen (N) content is comparable to that found in its N-rich atmosphere. Mantle N has been proposed to be primordial or sourced by later subduction, yet its origin…
The Case for Technosignatures: Why They May Be Abundant, Long-lived, Highly Detectable, and Unambiguous
Jason T. Wright, Jacob Haqq-Misra, Adam Frank +3
The intuition suggested by the Drake equation implies that technology should be less prevalent than biology in the galaxy. However, it has been appreciated for decades in the SETI…