The SETI Ellipsoid is a geometric method for prioritizing technosignature observations based on the strategy of receiving signals synchronized to conspicuous astronomical events. Precise distances to nearby stars from Gaia […]
astro-ph.IM
Posted inAlpha Centauri
Simulations Of Astrometric Planet Detection In Alpha Centauri By Intensity Interferometry
Recent dynamical studies indicate that the possibility of an Earth-like planet around αCen A or B should be taken seriously. Such a planet, if it exists, would perturb the orbital […]
Posted inAstronomy & Telescopes
Large Interferometer For Exoplanets (LIFE): VII. Practical implementation of a kernel-nulling beam combiner with a discussion on instrumental uncertainties and redundancy benefits
Context: In the previous paper in this series, we identified that a pentagonal arrangement of five telescopes, using a kernel-nulling beam combiner, shows notable advantages for some important performance metrics […]
Posted inAstrochemistry
Lyα Irradiation Of Solid-state Formamide
Formamide (NH2CHO), a potential prebiotic precursor, has been proposed to play an important role in the context of origin of life on our planet. It has been observed in different […]
Posted inSETI & Technosignatures
SETI In 2021
In this second installment of SETI in 20xx, we very briefly and subjectively review developments in SETI in 2021. Our primary focus is 93 papers and books published or made […]
Posted inExoplanets, -moons, -comets
Simulating The Study Of Exoplanets Using Photonic Spectrographs
Photonic spectrographs offer a highly miniaturized, flexible, and stable on-chip solution for astronomical spectroscopy and can be used for various science cases such as determining the atmospheric composition of exoplanets […]
Posted inSETI & Technosignatures
Setigen: Simulating Radio Technosignatures For SETI
The goal of the search for extraterrestrial intelligence (SETI) is the detection of non-human technosignatures, such as technology-produced emission in radio observations. While many have speculated about the character of […]
Posted inSETI & Technosignatures
Opportunities For Technosignature Science In The Astro2020 Report
The Astro2020 report outlines numerous recommendations that could significantly advance technosignature science. Technosignatures refer to any observable manifestations of extraterrestrial technology, and the search for technosignatures is part of the […]
Posted inTerraforming & Geoengineering
Cloud Continents: Terraforming Venus Efficiently by Means of a Floating Artificial Surface
The similarity of Venus and Earth in bulk properties make Venus an appealing target for future colonization. Several proposals have been put forward for colonizing and even terraforming Venus despite […]
Posted inAstrobiology (general), Courses, Press Release
AbGradCon 2021: Lessons in Digital Meetings, International Collaboration, and Interdisciplinarity in Astrobiology
The Astrobiology Graduate Conference (AbGradCon) is an annual conference both organized for and by early career researchers, postdoctoral fellows, and students as a way to train the next generation of […]