Results 81 to 90 of about 11,825 (205)

The SERENDIP 2 SETI project: Current status [PDF]

open access: yes
Over the past 30 years, interest in extraterrestrial intelligence has progressed from philosophical discussion to rigorous scientific endeavors attempting to make contact.
Bowyer, C. S.   +4 more
core   +1 more source

Direct Contact Among Galactic Civilizations by Relativistic Interstellar Spaceflight [PDF]

open access: yes, 1962
Direct contact among galactic populations by relativistic interstellar ...
Sagan, Carl
core   +1 more source

Can Collimated Extraterrestrial Signals be Intercepted?

open access: yes, 2014
The Optical Search for Extraterrestrial Intelligence (OSETI) attempts to detect collimated, narrowband pulses of electromagnetic radiation. These pulses may either consist of signals intentionally directed at the Earth, or signals between two star ...
Forgan, Duncan H.
core  

CARGOISM AND SCIENTIFIC JUSTIFICATION IN THE SEARCH FOR EXTRATERRESTRIAL INTELLIGENCE

open access: yesZygon, 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

The search for extraterrestrial intelligence: Telecommunications technology [PDF]

open access: yes
Efforts to discover evidence of intelligent extraterrestrial life have become not only feasible, but respectable. Fledgling observational projects have begun that will use state-of-the-art hardware to develop sophisticated receiving and data processing ...
Edelson, R. E., Levy, G. S.
core   +1 more source

Impacts of sociopolitical conditions [PDF]

open access: yes
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

Ultrafast Modulations in Stellar, Solar and Galactic Spectra: Dark Matter and Numerical Ghosts, Stellar Flares and SETI

open access: yesParticles
Background: From new results presented in the literature we discuss the hypothesis, presented in an our previous work, that the ultrafast periodic spectral modulations at fS=0.607±0.08 THz found in the spectra of 236 stars of the Sloan Digital Sky Survey
Fabrizio Tamburini, Ignazio Licata
doaj   +1 more source

Earth Detecting Earth: At What Distance Could Earth’s Constellation of Technosignatures Be Detected with Present-day Technology?

open access: yesThe Astronomical Journal
The field of Search for Extraterrestrial Intelligence (SETI) searches for “technosignatures” could provide the first detection of life beyond Earth through the technology that an extraterrestrial intelligence may have created.
Sofia Z. Sheikh   +7 more
doaj   +1 more source

Publications of the exobiology program for 1984: A special bibliography [PDF]

open access: yes
A bibliography of NASA exobiology programs is given. Planetary environments; chemical evolution; organic geochemistry; extraterrestrial intelligence; and the effect of planetary solar and astrophysical phenomena on the evolution of complex life in the ...
Devincenzi, D. L., Wallace, J. S.
core   +1 more source

Broadband Searches for Extraterrestrial Technological Intelligence: A New Strategy to Find Nearby Alien Civilizations

open access: yesThe Astrophysical Journal
One of the most interesting questions that astronomy can hope to answer is: Are we alone in our Milky Way Galaxy? A detection of an electromagnetic (EM) signal generated by an extraterrestrial technological intelligence, or the presence in our solar ...
B. Zuckerman
doaj   +1 more source

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