Results 71 to 80 of about 588 (145)

Making Habitable Worlds: Planets Versus Megastructures

, 2023
In 2016, a star KIC 8462852 caught the world's attention due to a paper by citizen scientists who noticed its seemingly unexplainable brightness variations.
Narasimha, Raghav, Safonova, Margarita, Sivaram, C.   +2 more
core  

Projections of Earth’s Technosphere: Strategies for Observing Technosignatures on Terrestrial Exoplanets

The Astrophysical Journal Letters
The search for technosignatures—remotely detectable evidence of extraterrestrial technology—draws upon examples from the recent history of Earth as well as projections of Earth’s technosphere.
Jacob Haqq-Misra, Ravi K. Kopparapu, George Profitiliotis   +2 more
doaj   +1 more source

Technosignature Searches with Real-time Alert Brokers

The Astronomical Journal
We present an exploration of technosignature research that is possible using real-time alert brokers from surveys such as the Zwicky Transient Facility (ZTF) and the upcoming Legacy Survey of Space and Time (LSST).
Eleanor M. Gallay, James R. A. Davenport, Steve Croft   +2 more
doaj   +1 more source

Evaluation of Several Computer Vision Feature Detectors/Extractors on Ahuna Mons Region in Ceres and Its Implications for Technosignatures Search. [PDF]

Vision (Basel), 2022
De la Torre GG.
europepmc   +1 more source

The Fermi Paradox Revisited: Technosignatures and the Contact Era

The Astrophysical Journal, 2022
Abstract A new solution to the Fermi Paradox is presented: probes or visits from putative alien civilizations have a very low probability until a civilization reaches a certain age (called the “Contact Era”) after the onset of radio communications.
openaire   +2 more sources

Microlensing Signatures of Dyson Sphere–like Structures around Primordial Black Holes as Technosignatures of Extraterrestrial Advanced Civilizations

The Astrophysical Journal
We investigate the microlensing detectability of extraterrestrial technosignatures originating from Dyson sphere-like structures, such as Dyson swarms surrounding primordial black holes.
Shant Baghram
doaj   +1 more source

WISE/CatWISE Constraints on Dysonian Waste-heat Technosignatures in Nearby Galaxies

The Astronomical Journal
We search for galaxy-scale (Dysonian) waste heat in the mid-infrared using WISE. Starting from the 2MASS Redshift Survey, we crossmatch to CatWISE2020 and AllWISE, apply standard MIR AGN/starburst vetoes (Stern, Assef R90, Jarrett), and treat W1 and W2 ...
Bo-Lun Huang, Zhen-Zhao Tao, Tong-Jie Zhang   +2 more
doaj   +1 more source

Biosignature False Positives [PDF]

In our search for life - whether within the earliest part of Earth's geologic record, on planets within our solar system such Mars, or especially for extrasolar planets - we must infer the presence of life from its impact on the local or global ...
Domagal-Goldman, Shawn, Harman, Chester E.   +1 more
core   +1 more source

Technosignatures Gap List Study

, 2022
Abstract: Motivation and Objective: The ExEP (Exoplanet Exploration Program) is a program within NASA’s Astrophysics Division whose charter includes identification and development of key technologies to enable the discovery of habitable worlds. We are following up on the 2018 NASA Technosignatures (TS) Workshop report to inform the ExEP with a thorough
openaire   +1 more source

Formalising the Pathways to Life Using Assembly Spaces. [PDF]

Entropy (Basel), 2022
Marshall SM, Moore DG, Murray ARG, Walker SI, Cronin L.   +4 more
europepmc   +1 more source