Results 81 to 90 of about 9,504 (208)

Publications of the exobiology program for 1982. A special bibliography [PDF]

Chemical evolution, organic geochemistry, origin and evalution of life, planetary environments, life in the universe, search for extraterrestrial intelligence, and planetary protection are ...
Devincenzi, D. L., Pleasant, L. G.
core   +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

Impacts of sociopolitical conditions [PDF]

Space development scenarios and the choice of technologies to carry them out depend upon the future social, economic, and political factors. A brief discussion concerning the impact of sociopolitical conditions on space exploration is presented.
Finney, Ben R.
core   +1 more source

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

Robot Consciousness: Physics and Metaphysics Here and Abroad [PDF]

Interest has been renewed in the study of consciousness, both theoretical and applied, following developments in 20th and early 21st-century logic, metamathematics, computer science, and the brain sciences.
Ripley, Stephen
core  

Dual-backend Multibeam Position-switching Targeted SETI Observations toward Nearby Active Planet-hosting Systems with FAST

The Astronomical Journal
The Five-hundred-meter Aperture Spherical Telescope (FAST), the world’s largest single-dish radio telescope, lists the search for extraterrestrial intelligence (SETI) as one of its key scientific objectives.
Jian-Kang Li, Zhen-Zhao Tao, Pei Wang, Tong-Jie Zhang   +3 more
doaj   +1 more source

Fourth Symposium on Chemical Evolution and the Origin and Evolution of Life [PDF]

This symposium was held at the NASA Ames Research Center, Moffett Field, California, July 24-27, 1990. The NASA exobiology investigators reported their recent research findings. Scientific papers were presented in the following areas: cosmic evolution of
Andersen, Dale T., Bzik, Sara E., Rummel, John D., Wharton, Robert A., Jr.   +3 more
core   +1 more source

A Narrowband Technosignature Search toward the Hycean Candidate K2-18 b Using the VLA and MeerKAT

The Astronomical Journal
K2-18 b, a sub-Neptune exoplanet located in the habitable zone of its host star, has emerged as an important target for atmospheric characterization, and assessments of potential habitability.
C. D. Tremblay, S. Chaudhary, M. G. Li, S. Z. Sheikh, T. Myburgh, D. Czech, D. E. MacMahon, P. B. Demorest, R. A. Donnachie, A. P. V. Siemion, V. Gajjar, M. Lebofsky, K. Wandia, K. I. Perez, N. Madhusudhan   +14 more
doaj   +1 more source

CARGOISM AND SCIENTIFIC JUSTIFICATION IN THE SEARCH FOR EXTRATERRESTRIAL INTELLIGENCE

Zygon, 2019
This article compares justifications of the search for extraterrestrial intelligence (SETI) presented by scientists with ideational constructs associated with cargo cults in Melanesia. In focusing on similarities between cargoism and SETI, I argue that,
doaj   +2 more sources

In Search of Extraterrestrial Artificial Intelligence Through Dyson Sphere–like Structures around Primordial Black Holes

The Astrophysical Journal
Are we alone? It is a compelling question that human beings have confronted for centuries. The search for extraterrestrial life is a broad range of quests for finding simple forms of life up to intelligent beings in the Universe. The plausible assumption
Shant Baghram
doaj   +1 more source